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Finding the Fourth Proportional to 3,681.79, 5,078.10 and 2,500.81

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Solution

The fourth proportional to 3,681.79, 5,078.10 and 2,500.81 is: 3,449.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.79 : 5,078.10 = 2,500.81 : x
  2. Step 2: Convert to fraction form
    3,681.79/5,078.10 = 2,500.81/x
  3. Step 3: Cross multiply
    3,681.79x = 5,078.10 × 2,500.81
  4. Step 4: Simplify right side
    3,681.79x = 12,699,363.26
  5. Step 5: Solve for x
    x = 12,699,363.26/3,681.79
  6. Step 6: Final answer
    x = 3,449.24

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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.