Home / 1,118.16-1,553.76-1,106.28

Finding the Fourth Proportional to 1,118.16, 1,553.76 and 1,106.28

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Solution

The fourth proportional to 1,118.16, 1,553.76 and 1,106.28 is: 1,537.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.16 : 1,553.76 = 1,106.28 : x
  2. Step 2: Convert to fraction form
    1,118.16/1,553.76 = 1,106.28/x
  3. Step 3: Cross multiply
    1,118.16x = 1,553.76 × 1,106.28
  4. Step 4: Simplify right side
    1,118.16x = 1,718,893.61
  5. Step 5: Solve for x
    x = 1,718,893.61/1,118.16
  6. Step 6: Final answer
    x = 1,537.25

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.