Home / 1,126.46-1,555.58-1,065.11

Finding the Fourth Proportional to 1,126.46, 1,555.58 and 1,065.11

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Solution

The fourth proportional to 1,126.46, 1,555.58 and 1,065.11 is: 1,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.46 : 1,555.58 = 1,065.11 : x
  2. Step 2: Convert to fraction form
    1,126.46/1,555.58 = 1,065.11/x
  3. Step 3: Cross multiply
    1,126.46x = 1,555.58 × 1,065.11
  4. Step 4: Simplify right side
    1,126.46x = 1,656,858.70
  5. Step 5: Solve for x
    x = 1,656,858.70/1,126.46
  6. Step 6: Final answer
    x = 1,470.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.