Home / 1,720.16-2,373.85-974.12

Finding the Fourth Proportional to 1,720.16, 2,373.85 and 974.12

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Solution

The fourth proportional to 1,720.16, 2,373.85 and 974.12 is: 1,344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.16 : 2,373.85 = 974.12 : x
  2. Step 2: Convert to fraction form
    1,720.16/2,373.85 = 974.12/x
  3. Step 3: Cross multiply
    1,720.16x = 2,373.85 × 974.12
  4. Step 4: Simplify right side
    1,720.16x = 2,312,400.46
  5. Step 5: Solve for x
    x = 2,312,400.46/1,720.16
  6. Step 6: Final answer
    x = 1,344.30

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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.