Home / 1,720.24-2,373.76-1,057.12

Finding the Fourth Proportional to 1,720.24, 2,373.76 and 1,057.12

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Solution

The fourth proportional to 1,720.24, 2,373.76 and 1,057.12 is: 1,458.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.24 : 2,373.76 = 1,057.12 : x
  2. Step 2: Convert to fraction form
    1,720.24/2,373.76 = 1,057.12/x
  3. Step 3: Cross multiply
    1,720.24x = 2,373.76 × 1,057.12
  4. Step 4: Simplify right side
    1,720.24x = 2,509,349.17
  5. Step 5: Solve for x
    x = 2,509,349.17/1,720.24
  6. Step 6: Final answer
    x = 1,458.72

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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.