Home / 3,543.79-4,890.42-1,972.19

Finding the Fourth Proportional to 3,543.79, 4,890.42 and 1,972.19

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Solution

The fourth proportional to 3,543.79, 4,890.42 and 1,972.19 is: 2,721.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.79 : 4,890.42 = 1,972.19 : x
  2. Step 2: Convert to fraction form
    3,543.79/4,890.42 = 1,972.19/x
  3. Step 3: Cross multiply
    3,543.79x = 4,890.42 × 1,972.19
  4. Step 4: Simplify right side
    3,543.79x = 9,644,837.42
  5. Step 5: Solve for x
    x = 9,644,837.42/3,543.79
  6. Step 6: Final answer
    x = 2,721.62

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1.5x scale

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.