Home / 2,439.66-3,365.82-1,543.45

Finding the Fourth Proportional to 2,439.66, 3,365.82 and 1,543.45

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Solution

The fourth proportional to 2,439.66, 3,365.82 and 1,543.45 is: 2,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.66 : 3,365.82 = 1,543.45 : x
  2. Step 2: Convert to fraction form
    2,439.66/3,365.82 = 1,543.45/x
  3. Step 3: Cross multiply
    2,439.66x = 3,365.82 × 1,543.45
  4. Step 4: Simplify right side
    2,439.66x = 5,194,974.88
  5. Step 5: Solve for x
    x = 5,194,974.88/2,439.66
  6. Step 6: Final answer
    x = 2,129.38

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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.