Home / 1,720.32-2,374.02-974.30

Finding the Fourth Proportional to 1,720.32, 2,374.02 and 974.30

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Solution

The fourth proportional to 1,720.32, 2,374.02 and 974.30 is: 1,344.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.32 : 2,374.02 = 974.30 : x
  2. Step 2: Convert to fraction form
    1,720.32/2,374.02 = 974.30/x
  3. Step 3: Cross multiply
    1,720.32x = 2,374.02 × 974.30
  4. Step 4: Simplify right side
    1,720.32x = 2,313,007.69
  5. Step 5: Solve for x
    x = 2,313,007.69/1,720.32
  6. Step 6: Final answer
    x = 1,344.52

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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.