Home / 1,126.24-1,690.07-1,116.95

Finding the Fourth Proportional to 1,126.24, 1,690.07 and 1,116.95

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Solution

The fourth proportional to 1,126.24, 1,690.07 and 1,116.95 is: 1,676.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.24 : 1,690.07 = 1,116.95 : x
  2. Step 2: Convert to fraction form
    1,126.24/1,690.07 = 1,116.95/x
  3. Step 3: Cross multiply
    1,126.24x = 1,690.07 × 1,116.95
  4. Step 4: Simplify right side
    1,126.24x = 1,887,727.50
  5. Step 5: Solve for x
    x = 1,887,727.50/1,126.24
  6. Step 6: Final answer
    x = 1,676.13

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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.