Home / 1,132.32-1,562.40-976.80

Finding the Fourth Proportional to 1,132.32, 1,562.40 and 976.80

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Solution

The fourth proportional to 1,132.32, 1,562.40 and 976.80 is: 1,347.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.32 : 1,562.40 = 976.80 : x
  2. Step 2: Convert to fraction form
    1,132.32/1,562.40 = 976.80/x
  3. Step 3: Cross multiply
    1,132.32x = 1,562.40 × 976.80
  4. Step 4: Simplify right side
    1,132.32x = 1,526,152.32
  5. Step 5: Solve for x
    x = 1,526,152.32/1,132.32
  6. Step 6: Final answer
    x = 1,347.81

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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.