Home / 1,695.18-2,542.77-915.83

Finding the Fourth Proportional to 1,695.18, 2,542.77 and 915.83

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Solution

The fourth proportional to 1,695.18, 2,542.77 and 915.83 is: 1,373.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.18 : 2,542.77 = 915.83 : x
  2. Step 2: Convert to fraction form
    1,695.18/2,542.77 = 915.83/x
  3. Step 3: Cross multiply
    1,695.18x = 2,542.77 × 915.83
  4. Step 4: Simplify right side
    1,695.18x = 2,328,745.05
  5. Step 5: Solve for x
    x = 2,328,745.05/1,695.18
  6. Step 6: Final answer
    x = 1,373.75

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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.