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Finding the Fourth Proportional to 1,373.50, 2,058.90 and 756.60

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Solution

The fourth proportional to 1,373.50, 2,058.90 and 756.60 is: 1,134.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.50 : 2,058.90 = 756.60 : x
  2. Step 2: Convert to fraction form
    1,373.50/2,058.90 = 756.60/x
  3. Step 3: Cross multiply
    1,373.50x = 2,058.90 × 756.60
  4. Step 4: Simplify right side
    1,373.50x = 1,557,763.74
  5. Step 5: Solve for x
    x = 1,557,763.74/1,373.50
  6. Step 6: Final answer
    x = 1,134.16

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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.