Home / 9,715.32-14,569.92-3,139.92

Finding the Fourth Proportional to 9,715.32, 14,569.92 and 3,139.92

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Solution

The fourth proportional to 9,715.32, 14,569.92 and 3,139.92 is: 4,708.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,715.32 : 14,569.92 = 3,139.92 : x
  2. Step 2: Convert to fraction form
    9,715.32/14,569.92 = 3,139.92/x
  3. Step 3: Cross multiply
    9,715.32x = 14,569.92 × 3,139.92
  4. Step 4: Simplify right side
    9,715.32x = 45,748,383.21
  5. Step 5: Solve for x
    x = 45,748,383.21/9,715.32
  6. Step 6: Final answer
    x = 4,708.89

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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.