Home / 8,931.65-13,397.38-5,422.62

Finding the Fourth Proportional to 8,931.65, 13,397.38 and 5,422.62

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Solution

The fourth proportional to 8,931.65, 13,397.38 and 5,422.62 is: 8,133.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.65 : 13,397.38 = 5,422.62 : x
  2. Step 2: Convert to fraction form
    8,931.65/13,397.38 = 5,422.62/x
  3. Step 3: Cross multiply
    8,931.65x = 13,397.38 × 5,422.62
  4. Step 4: Simplify right side
    8,931.65x = 72,648,900.74
  5. Step 5: Solve for x
    x = 72,648,900.74/8,931.65
  6. Step 6: Final answer
    x = 8,133.87

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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.