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Finding the Fourth Proportional to 3,875.61, 5,811.99 and 1,654.20

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Solution

The fourth proportional to 3,875.61, 5,811.99 and 1,654.20 is: 2,480.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.61 : 5,811.99 = 1,654.20 : x
  2. Step 2: Convert to fraction form
    3,875.61/5,811.99 = 1,654.20/x
  3. Step 3: Cross multiply
    3,875.61x = 5,811.99 × 1,654.20
  4. Step 4: Simplify right side
    3,875.61x = 9,614,193.86
  5. Step 5: Solve for x
    x = 9,614,193.86/3,875.61
  6. Step 6: Final answer
    x = 2,480.69

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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.