Home / 8,432.15-12,638.37-6,345.47

Finding the Fourth Proportional to 8,432.15, 12,638.37 and 6,345.47

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Solution

The fourth proportional to 8,432.15, 12,638.37 and 6,345.47 is: 9,510.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,432.15 : 12,638.37 = 6,345.47 : x
  2. Step 2: Convert to fraction form
    8,432.15/12,638.37 = 6,345.47/x
  3. Step 3: Cross multiply
    8,432.15x = 12,638.37 × 6,345.47
  4. Step 4: Simplify right side
    8,432.15x = 80,196,397.68
  5. Step 5: Solve for x
    x = 80,196,397.68/8,432.15
  6. Step 6: Final answer
    x = 9,510.79

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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.