Home / 1,651.10-2,475.42-677.20

Finding the Fourth Proportional to 1,651.10, 2,475.42 and 677.20

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Solution

The fourth proportional to 1,651.10, 2,475.42 and 677.20 is: 1,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.10 : 2,475.42 = 677.20 : x
  2. Step 2: Convert to fraction form
    1,651.10/2,475.42 = 677.20/x
  3. Step 3: Cross multiply
    1,651.10x = 2,475.42 × 677.20
  4. Step 4: Simplify right side
    1,651.10x = 1,676,354.42
  5. Step 5: Solve for x
    x = 1,676,354.42/1,651.10
  6. Step 6: Final answer
    x = 1,015.30

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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.