Home / 1,742.43-2,614.67-647.57

Finding the Fourth Proportional to 1,742.43, 2,614.67 and 647.57

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Solution

The fourth proportional to 1,742.43, 2,614.67 and 647.57 is: 971.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.43 : 2,614.67 = 647.57 : x
  2. Step 2: Convert to fraction form
    1,742.43/2,614.67 = 647.57/x
  3. Step 3: Cross multiply
    1,742.43x = 2,614.67 × 647.57
  4. Step 4: Simplify right side
    1,742.43x = 1,693,165.54
  5. Step 5: Solve for x
    x = 1,693,165.54/1,742.43
  6. Step 6: Final answer
    x = 971.73

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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.