Home / 1,317.41-1,972.95-1,042.61

Finding the Fourth Proportional to 1,317.41, 1,972.95 and 1,042.61

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Solution

The fourth proportional to 1,317.41, 1,972.95 and 1,042.61 is: 1,561.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.41 : 1,972.95 = 1,042.61 : x
  2. Step 2: Convert to fraction form
    1,317.41/1,972.95 = 1,042.61/x
  3. Step 3: Cross multiply
    1,317.41x = 1,972.95 × 1,042.61
  4. Step 4: Simplify right side
    1,317.41x = 2,057,017.40
  5. Step 5: Solve for x
    x = 2,057,017.40/1,317.41
  6. Step 6: Final answer
    x = 1,561.41

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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.