Home / 1,239.18-1,710.33-741.63

Finding the Fourth Proportional to 1,239.18, 1,710.33 and 741.63

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Solution

The fourth proportional to 1,239.18, 1,710.33 and 741.63 is: 1,023.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239.18 : 1,710.33 = 741.63 : x
  2. Step 2: Convert to fraction form
    1,239.18/1,710.33 = 741.63/x
  3. Step 3: Cross multiply
    1,239.18x = 1,710.33 × 741.63
  4. Step 4: Simplify right side
    1,239.18x = 1,268,432.04
  5. Step 5: Solve for x
    x = 1,268,432.04/1,239.18
  6. Step 6: Final answer
    x = 1,023.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.