Home / 1,655.42-2,487.38-1,248.39

Finding the Fourth Proportional to 1,655.42, 2,487.38 and 1,248.39

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Solution

The fourth proportional to 1,655.42, 2,487.38 and 1,248.39 is: 1,875.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,655.42 : 2,487.38 = 1,248.39 : x
  2. Step 2: Convert to fraction form
    1,655.42/2,487.38 = 1,248.39/x
  3. Step 3: Cross multiply
    1,655.42x = 2,487.38 × 1,248.39
  4. Step 4: Simplify right side
    1,655.42x = 3,105,214.08
  5. Step 5: Solve for x
    x = 3,105,214.08/1,655.42
  6. Step 6: Final answer
    x = 1,875.79

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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.