Home / 1,247.50-1,720.56-968.58

Finding the Fourth Proportional to 1,247.50, 1,720.56 and 968.58

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Solution

The fourth proportional to 1,247.50, 1,720.56 and 968.58 is: 1,335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.50 : 1,720.56 = 968.58 : x
  2. Step 2: Convert to fraction form
    1,247.50/1,720.56 = 968.58/x
  3. Step 3: Cross multiply
    1,247.50x = 1,720.56 × 968.58
  4. Step 4: Simplify right side
    1,247.50x = 1,666,500.00
  5. Step 5: Solve for x
    x = 1,666,500.00/1,247.50
  6. Step 6: Final answer
    x = 1,335.87

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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.