Home / 8,861.31-13,294.28-3,315.09

Finding the Fourth Proportional to 8,861.31, 13,294.28 and 3,315.09

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Solution

The fourth proportional to 8,861.31, 13,294.28 and 3,315.09 is: 4,973.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.31 : 13,294.28 = 3,315.09 : x
  2. Step 2: Convert to fraction form
    8,861.31/13,294.28 = 3,315.09/x
  3. Step 3: Cross multiply
    8,861.31x = 13,294.28 × 3,315.09
  4. Step 4: Simplify right side
    8,861.31x = 44,071,718.11
  5. Step 5: Solve for x
    x = 44,071,718.11/8,861.31
  6. Step 6: Final answer
    x = 4,973.50

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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.