Home / 8,423.86-11,635.23-5,780.02

Finding the Fourth Proportional to 8,423.86, 11,635.23 and 5,780.02

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Solution

The fourth proportional to 8,423.86, 11,635.23 and 5,780.02 is: 7,983.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.86 : 11,635.23 = 5,780.02 : x
  2. Step 2: Convert to fraction form
    8,423.86/11,635.23 = 5,780.02/x
  3. Step 3: Cross multiply
    8,423.86x = 11,635.23 × 5,780.02
  4. Step 4: Simplify right side
    8,423.86x = 67,251,862.10
  5. Step 5: Solve for x
    x = 67,251,862.10/8,423.86
  6. Step 6: Final answer
    x = 7,983.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.