Home / 8,402.81-12,601.27-2,478.12

Finding the Fourth Proportional to 8,402.81, 12,601.27 and 2,478.12

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Solution

The fourth proportional to 8,402.81, 12,601.27 and 2,478.12 is: 3,716.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,402.81 : 12,601.27 = 2,478.12 : x
  2. Step 2: Convert to fraction form
    8,402.81/12,601.27 = 2,478.12/x
  3. Step 3: Cross multiply
    8,402.81x = 12,601.27 × 2,478.12
  4. Step 4: Simplify right side
    8,402.81x = 31,227,496.91
  5. Step 5: Solve for x
    x = 31,227,496.91/8,402.81
  6. Step 6: Final answer
    x = 3,716.32

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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.