Home / 1,155.30-1,724.21-1,060.80

Finding the Fourth Proportional to 1,155.30, 1,724.21 and 1,060.80

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Solution

The fourth proportional to 1,155.30, 1,724.21 and 1,060.80 is: 1,583.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.30 : 1,724.21 = 1,060.80 : x
  2. Step 2: Convert to fraction form
    1,155.30/1,724.21 = 1,060.80/x
  3. Step 3: Cross multiply
    1,155.30x = 1,724.21 × 1,060.80
  4. Step 4: Simplify right side
    1,155.30x = 1,829,036.66
  5. Step 5: Solve for x
    x = 1,829,036.66/1,155.30
  6. Step 6: Final answer
    x = 1,583.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.