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Finding the Fourth Proportional to 3,613.07, 5,419.60 and 877.07

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Solution

The fourth proportional to 3,613.07, 5,419.60 and 877.07 is: 1,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.07 : 5,419.60 = 877.07 : x
  2. Step 2: Convert to fraction form
    3,613.07/5,419.60 = 877.07/x
  3. Step 3: Cross multiply
    3,613.07x = 5,419.60 × 877.07
  4. Step 4: Simplify right side
    3,613.07x = 4,753,337.09
  5. Step 5: Solve for x
    x = 4,753,337.09/3,613.07
  6. Step 6: Final answer
    x = 1,315.60

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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.