Home / 4,139.72-5,712.79-2,347.54

Finding the Fourth Proportional to 4,139.72, 5,712.79 and 2,347.54

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Solution

The fourth proportional to 4,139.72, 5,712.79 and 2,347.54 is: 3,239.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.72 : 5,712.79 = 2,347.54 : x
  2. Step 2: Convert to fraction form
    4,139.72/5,712.79 = 2,347.54/x
  3. Step 3: Cross multiply
    4,139.72x = 5,712.79 × 2,347.54
  4. Step 4: Simplify right side
    4,139.72x = 13,411,001.57
  5. Step 5: Solve for x
    x = 13,411,001.57/4,139.72
  6. Step 6: Final answer
    x = 3,239.59

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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.