Home / 1,154.12-1,591.16-918.88

Finding the Fourth Proportional to 1,154.12, 1,591.16 and 918.88

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Solution

The fourth proportional to 1,154.12, 1,591.16 and 918.88 is: 1,266.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.12 : 1,591.16 = 918.88 : x
  2. Step 2: Convert to fraction form
    1,154.12/1,591.16 = 918.88/x
  3. Step 3: Cross multiply
    1,154.12x = 1,591.16 × 918.88
  4. Step 4: Simplify right side
    1,154.12x = 1,462,085.10
  5. Step 5: Solve for x
    x = 1,462,085.10/1,154.12
  6. Step 6: Final answer
    x = 1,266.84

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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.