Home / 8,125.71-12,191.29-3,445.53

Finding the Fourth Proportional to 8,125.71, 12,191.29 and 3,445.53

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Solution

The fourth proportional to 8,125.71, 12,191.29 and 3,445.53 is: 5,169.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.71 : 12,191.29 = 3,445.53 : x
  2. Step 2: Convert to fraction form
    8,125.71/12,191.29 = 3,445.53/x
  3. Step 3: Cross multiply
    8,125.71x = 12,191.29 × 3,445.53
  4. Step 4: Simplify right side
    8,125.71x = 42,005,455.43
  5. Step 5: Solve for x
    x = 42,005,455.43/8,125.71
  6. Step 6: Final answer
    x = 5,169.45

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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.