Home / 1,108.17-1,521.09-1,060.65

Finding the Fourth Proportional to 1,108.17, 1,521.09 and 1,060.65

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Solution

The fourth proportional to 1,108.17, 1,521.09 and 1,060.65 is: 1,455.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108.17 : 1,521.09 = 1,060.65 : x
  2. Step 2: Convert to fraction form
    1,108.17/1,521.09 = 1,060.65/x
  3. Step 3: Cross multiply
    1,108.17x = 1,521.09 × 1,060.65
  4. Step 4: Simplify right side
    1,108.17x = 1,613,344.11
  5. Step 5: Solve for x
    x = 1,613,344.11/1,108.17
  6. Step 6: Final answer
    x = 1,455.86

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.