Home / 1,159.11-1,598.56-921.27

Finding the Fourth Proportional to 1,159.11, 1,598.56 and 921.27

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Solution

The fourth proportional to 1,159.11, 1,598.56 and 921.27 is: 1,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159.11 : 1,598.56 = 921.27 : x
  2. Step 2: Convert to fraction form
    1,159.11/1,598.56 = 921.27/x
  3. Step 3: Cross multiply
    1,159.11x = 1,598.56 × 921.27
  4. Step 4: Simplify right side
    1,159.11x = 1,472,711.65
  5. Step 5: Solve for x
    x = 1,472,711.65/1,159.11
  6. Step 6: Final answer
    x = 1,270.55

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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.