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Finding the Fourth Proportional to 3,613.89, 4,987.14 and 1,957.89

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Solution

The fourth proportional to 3,613.89, 4,987.14 and 1,957.89 is: 2,701.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.89 : 4,987.14 = 1,957.89 : x
  2. Step 2: Convert to fraction form
    3,613.89/4,987.14 = 1,957.89/x
  3. Step 3: Cross multiply
    3,613.89x = 4,987.14 × 1,957.89
  4. Step 4: Simplify right side
    3,613.89x = 9,764,271.53
  5. Step 5: Solve for x
    x = 9,764,271.53/3,613.89
  6. Step 6: Final answer
    x = 2,701.87

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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.