Home / 1,697.12-2,545.71-1,115.82

Finding the Fourth Proportional to 1,697.12, 2,545.71 and 1,115.82

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Solution

The fourth proportional to 1,697.12, 2,545.71 and 1,115.82 is: 1,673.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,697.12 : 2,545.71 = 1,115.82 : x
  2. Step 2: Convert to fraction form
    1,697.12/2,545.71 = 1,115.82/x
  3. Step 3: Cross multiply
    1,697.12x = 2,545.71 × 1,115.82
  4. Step 4: Simplify right side
    1,697.12x = 2,840,554.13
  5. Step 5: Solve for x
    x = 2,840,554.13/1,697.12
  6. Step 6: Final answer
    x = 1,673.75

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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.