Home / 2,781.15-4,165.65-2,160.02

Finding the Fourth Proportional to 2,781.15, 4,165.65 and 2,160.02

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Solution

The fourth proportional to 2,781.15, 4,165.65 and 2,160.02 is: 3,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.15 : 4,165.65 = 2,160.02 : x
  2. Step 2: Convert to fraction form
    2,781.15/4,165.65 = 2,160.02/x
  3. Step 3: Cross multiply
    2,781.15x = 4,165.65 × 2,160.02
  4. Step 4: Simplify right side
    2,781.15x = 8,997,866.48
  5. Step 5: Solve for x
    x = 8,997,866.48/2,781.15
  6. Step 6: Final answer
    x = 3,235.30

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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.