Home / 2,877.60-4,320-1,418.16

Finding the Fourth Proportional to 2,877.60, 4,320 and 1,418.16

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Solution

The fourth proportional to 2,877.60, 4,320 and 1,418.16 is: 2,129.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.60 : 4,320 = 1,418.16 : x
  2. Step 2: Convert to fraction form
    2,877.60/4,320 = 1,418.16/x
  3. Step 3: Cross multiply
    2,877.60x = 4,320 × 1,418.16
  4. Step 4: Simplify right side
    2,877.60x = 6,126,451.20
  5. Step 5: Solve for x
    x = 6,126,451.20/2,877.60
  6. Step 6: Final answer
    x = 2,129.01

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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.