Home / 9,135.32-12,612.51-6,613.52

Finding the Fourth Proportional to 9,135.32, 12,612.51 and 6,613.52

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Solution

The fourth proportional to 9,135.32, 12,612.51 and 6,613.52 is: 9,130.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.32 : 12,612.51 = 6,613.52 : x
  2. Step 2: Convert to fraction form
    9,135.32/12,612.51 = 6,613.52/x
  3. Step 3: Cross multiply
    9,135.32x = 12,612.51 × 6,613.52
  4. Step 4: Simplify right side
    9,135.32x = 83,413,024.07
  5. Step 5: Solve for x
    x = 83,413,024.07/9,135.32
  6. Step 6: Final answer
    x = 9,130.83

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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.