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Finding the Fourth Proportional to 3,487.68, 5,230.40 and 1,539.84

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Solution

The fourth proportional to 3,487.68, 5,230.40 and 1,539.84 is: 2,309.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.68 : 5,230.40 = 1,539.84 : x
  2. Step 2: Convert to fraction form
    3,487.68/5,230.40 = 1,539.84/x
  3. Step 3: Cross multiply
    3,487.68x = 5,230.40 × 1,539.84
  4. Step 4: Simplify right side
    3,487.68x = 8,053,979.14
  5. Step 5: Solve for x
    x = 8,053,979.14/3,487.68
  6. Step 6: Final answer
    x = 2,309.27

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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.