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Finding the Fourth Proportional to 7,679.04, 11,518.56 and 3,572.16

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Solution

The fourth proportional to 7,679.04, 11,518.56 and 3,572.16 is: 5,358.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.04 : 11,518.56 = 3,572.16 : x
  2. Step 2: Convert to fraction form
    7,679.04/11,518.56 = 3,572.16/x
  3. Step 3: Cross multiply
    7,679.04x = 11,518.56 × 3,572.16
  4. Step 4: Simplify right side
    7,679.04x = 41,146,139.29
  5. Step 5: Solve for x
    x = 41,146,139.29/7,679.04
  6. Step 6: Final answer
    x = 5,358.24

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.