Home / 8,397.08-12,587.42-3,128.24

Finding the Fourth Proportional to 8,397.08, 12,587.42 and 3,128.24

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Solution

The fourth proportional to 8,397.08, 12,587.42 and 3,128.24 is: 4,689.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,397.08 : 12,587.42 = 3,128.24 : x
  2. Step 2: Convert to fraction form
    8,397.08/12,587.42 = 3,128.24/x
  3. Step 3: Cross multiply
    8,397.08x = 12,587.42 × 3,128.24
  4. Step 4: Simplify right side
    8,397.08x = 39,376,415.62
  5. Step 5: Solve for x
    x = 39,376,415.62/8,397.08
  6. Step 6: Final answer
    x = 4,689.30

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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.