Home / 5,123.31-7,069.65-2,885.13

Finding the Fourth Proportional to 5,123.31, 7,069.65 and 2,885.13

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Solution

The fourth proportional to 5,123.31, 7,069.65 and 2,885.13 is: 3,981.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.31 : 7,069.65 = 2,885.13 : x
  2. Step 2: Convert to fraction form
    5,123.31/7,069.65 = 2,885.13/x
  3. Step 3: Cross multiply
    5,123.31x = 7,069.65 × 2,885.13
  4. Step 4: Simplify right side
    5,123.31x = 20,396,859.30
  5. Step 5: Solve for x
    x = 20,396,859.30/5,123.31
  6. Step 6: Final answer
    x = 3,981.19

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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.