Home / 2,538.09-3,502.70-1,543.20

Finding the Fourth Proportional to 2,538.09, 3,502.70 and 1,543.20

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Solution

The fourth proportional to 2,538.09, 3,502.70 and 1,543.20 is: 2,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,538.09 : 3,502.70 = 1,543.20 : x
  2. Step 2: Convert to fraction form
    2,538.09/3,502.70 = 1,543.20/x
  3. Step 3: Cross multiply
    2,538.09x = 3,502.70 × 1,543.20
  4. Step 4: Simplify right side
    2,538.09x = 5,405,358.92
  5. Step 5: Solve for x
    x = 5,405,358.92/2,538.09
  6. Step 6: Final answer
    x = 2,129.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.