Home / 2,780.38-4,165.77-1,477.90

Finding the Fourth Proportional to 2,780.38, 4,165.77 and 1,477.90

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Solution

The fourth proportional to 2,780.38, 4,165.77 and 1,477.90 is: 2,214.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.38 : 4,165.77 = 1,477.90 : x
  2. Step 2: Convert to fraction form
    2,780.38/4,165.77 = 1,477.90/x
  3. Step 3: Cross multiply
    2,780.38x = 4,165.77 × 1,477.90
  4. Step 4: Simplify right side
    2,780.38x = 6,156,591.48
  5. Step 5: Solve for x
    x = 6,156,591.48/2,780.38
  6. Step 6: Final answer
    x = 2,214.30

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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.