Home / 1,331.19-1,995.30-713.34

Finding the Fourth Proportional to 1,331.19, 1,995.30 and 713.34

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Solution

The fourth proportional to 1,331.19, 1,995.30 and 713.34 is: 1,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.19 : 1,995.30 = 713.34 : x
  2. Step 2: Convert to fraction form
    1,331.19/1,995.30 = 713.34/x
  3. Step 3: Cross multiply
    1,331.19x = 1,995.30 × 713.34
  4. Step 4: Simplify right side
    1,331.19x = 1,423,327.30
  5. Step 5: Solve for x
    x = 1,423,327.30/1,331.19
  6. Step 6: Final answer
    x = 1,069.21

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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.