Home / 1,331.32-1,998.10-1,177.63

Finding the Fourth Proportional to 1,331.32, 1,998.10 and 1,177.63

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Solution

The fourth proportional to 1,331.32, 1,998.10 and 1,177.63 is: 1,767.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.32 : 1,998.10 = 1,177.63 : x
  2. Step 2: Convert to fraction form
    1,331.32/1,998.10 = 1,177.63/x
  3. Step 3: Cross multiply
    1,331.32x = 1,998.10 × 1,177.63
  4. Step 4: Simplify right side
    1,331.32x = 2,353,022.50
  5. Step 5: Solve for x
    x = 2,353,022.50/1,331.32
  6. Step 6: Final answer
    x = 1,767.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.