Home / 1,539.89-2,124.97-943.38

Finding the Fourth Proportional to 1,539.89, 2,124.97 and 943.38

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Solution

The fourth proportional to 1,539.89, 2,124.97 and 943.38 is: 1,301.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.89 : 2,124.97 = 943.38 : x
  2. Step 2: Convert to fraction form
    1,539.89/2,124.97 = 943.38/x
  3. Step 3: Cross multiply
    1,539.89x = 2,124.97 × 943.38
  4. Step 4: Simplify right side
    1,539.89x = 2,004,654.20
  5. Step 5: Solve for x
    x = 2,004,654.20/1,539.89
  6. Step 6: Final answer
    x = 1,301.82

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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.