Home / 9,140.30-12,613.51-5,161.58

Finding the Fourth Proportional to 9,140.30, 12,613.51 and 5,161.58

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Solution

The fourth proportional to 9,140.30, 12,613.51 and 5,161.58 is: 7,122.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.30 : 12,613.51 = 5,161.58 : x
  2. Step 2: Convert to fraction form
    9,140.30/12,613.51 = 5,161.58/x
  3. Step 3: Cross multiply
    9,140.30x = 12,613.51 × 5,161.58
  4. Step 4: Simplify right side
    9,140.30x = 65,105,640.95
  5. Step 5: Solve for x
    x = 65,105,640.95/9,140.30
  6. Step 6: Final answer
    x = 7,122.92

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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.