Home / 8,359.38-12,516.39-5,430.42

Finding the Fourth Proportional to 8,359.38, 12,516.39 and 5,430.42

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Solution

The fourth proportional to 8,359.38, 12,516.39 and 5,430.42 is: 8,130.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,359.38 : 12,516.39 = 5,430.42 : x
  2. Step 2: Convert to fraction form
    8,359.38/12,516.39 = 5,430.42/x
  3. Step 3: Cross multiply
    8,359.38x = 12,516.39 × 5,430.42
  4. Step 4: Simplify right side
    8,359.38x = 67,969,254.58
  5. Step 5: Solve for x
    x = 67,969,254.58/8,359.38
  6. Step 6: Final answer
    x = 8,130.90

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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.