Home / 1,720.34-2,373.91-974.36

Finding the Fourth Proportional to 1,720.34, 2,373.91 and 974.36

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Solution

The fourth proportional to 1,720.34, 2,373.91 and 974.36 is: 1,344.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.34 : 2,373.91 = 974.36 : x
  2. Step 2: Convert to fraction form
    1,720.34/2,373.91 = 974.36/x
  3. Step 3: Cross multiply
    1,720.34x = 2,373.91 × 974.36
  4. Step 4: Simplify right side
    1,720.34x = 2,313,046.45
  5. Step 5: Solve for x
    x = 2,313,046.45/1,720.34
  6. Step 6: Final answer
    x = 1,344.53

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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.