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Finding the Fourth Proportional to 7,751.48, 10,679.22 and 5,359.16

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Solution

The fourth proportional to 7,751.48, 10,679.22 and 5,359.16 is: 7,383.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.48 : 10,679.22 = 5,359.16 : x
  2. Step 2: Convert to fraction form
    7,751.48/10,679.22 = 5,359.16/x
  3. Step 3: Cross multiply
    7,751.48x = 10,679.22 × 5,359.16
  4. Step 4: Simplify right side
    7,751.48x = 57,231,648.66
  5. Step 5: Solve for x
    x = 57,231,648.66/7,751.48
  6. Step 6: Final answer
    x = 7,383.32

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.