Home / 1,132.30-1,560.63-1,117.18

Finding the Fourth Proportional to 1,132.30, 1,560.63 and 1,117.18

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Solution

The fourth proportional to 1,132.30, 1,560.63 and 1,117.18 is: 1,539.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.30 : 1,560.63 = 1,117.18 : x
  2. Step 2: Convert to fraction form
    1,132.30/1,560.63 = 1,117.18/x
  3. Step 3: Cross multiply
    1,132.30x = 1,560.63 × 1,117.18
  4. Step 4: Simplify right side
    1,132.30x = 1,743,504.62
  5. Step 5: Solve for x
    x = 1,743,504.62/1,132.30
  6. Step 6: Final answer
    x = 1,539.79

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Half scale
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Double scale
Find fourth proportional to 1,133.30, 1,562.01 and 1,118.18
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1.5x scale

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.