Home / 2,646.60-3,972.30-1,781.52

Finding the Fourth Proportional to 2,646.60, 3,972.30 and 1,781.52

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Solution

The fourth proportional to 2,646.60, 3,972.30 and 1,781.52 is: 2,673.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,646.60 : 3,972.30 = 1,781.52 : x
  2. Step 2: Convert to fraction form
    2,646.60/3,972.30 = 1,781.52/x
  3. Step 3: Cross multiply
    2,646.60x = 3,972.30 × 1,781.52
  4. Step 4: Simplify right side
    2,646.60x = 7,076,731.90
  5. Step 5: Solve for x
    x = 7,076,731.90/2,646.60
  6. Step 6: Final answer
    x = 2,673.90

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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.