Home / 1,153.20-1,583.37-1,123.13

Finding the Fourth Proportional to 1,153.20, 1,583.37 and 1,123.13

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Solution

The fourth proportional to 1,153.20, 1,583.37 and 1,123.13 is: 1,542.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.20 : 1,583.37 = 1,123.13 : x
  2. Step 2: Convert to fraction form
    1,153.20/1,583.37 = 1,123.13/x
  3. Step 3: Cross multiply
    1,153.20x = 1,583.37 × 1,123.13
  4. Step 4: Simplify right side
    1,153.20x = 1,778,330.35
  5. Step 5: Solve for x
    x = 1,778,330.35/1,153.20
  6. Step 6: Final answer
    x = 1,542.08

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.