Home / 7,118.01-9,822.86-3,974.20

Finding the Fourth Proportional to 7,118.01, 9,822.86 and 3,974.20

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Solution

The fourth proportional to 7,118.01, 9,822.86 and 3,974.20 is: 5,484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.01 : 9,822.86 = 3,974.20 : x
  2. Step 2: Convert to fraction form
    7,118.01/9,822.86 = 3,974.20/x
  3. Step 3: Cross multiply
    7,118.01x = 9,822.86 × 3,974.20
  4. Step 4: Simplify right side
    7,118.01x = 39,038,010.21
  5. Step 5: Solve for x
    x = 39,038,010.21/7,118.01
  6. Step 6: Final answer
    x = 5,484.40

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.