Home / 1,445.18-2,165.05-713.90

Finding the Fourth Proportional to 1,445.18, 2,165.05 and 713.90

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Solution

The fourth proportional to 1,445.18, 2,165.05 and 713.90 is: 1,069.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.18 : 2,165.05 = 713.90 : x
  2. Step 2: Convert to fraction form
    1,445.18/2,165.05 = 713.90/x
  3. Step 3: Cross multiply
    1,445.18x = 2,165.05 × 713.90
  4. Step 4: Simplify right side
    1,445.18x = 1,545,629.20
  5. Step 5: Solve for x
    x = 1,545,629.20/1,445.18
  6. Step 6: Final answer
    x = 1,069.51

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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.