Home / 1,315.06-1,817.19-1,125.97

Finding the Fourth Proportional to 1,315.06, 1,817.19 and 1,125.97

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Solution

The fourth proportional to 1,315.06, 1,817.19 and 1,125.97 is: 1,555.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.06 : 1,817.19 = 1,125.97 : x
  2. Step 2: Convert to fraction form
    1,315.06/1,817.19 = 1,125.97/x
  3. Step 3: Cross multiply
    1,315.06x = 1,817.19 × 1,125.97
  4. Step 4: Simplify right side
    1,315.06x = 2,046,099.47
  5. Step 5: Solve for x
    x = 2,046,099.47/1,315.06
  6. Step 6: Final answer
    x = 1,555.90

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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.