Home / 2,939.78-4,407.35-2,012.52

Finding the Fourth Proportional to 2,939.78, 4,407.35 and 2,012.52

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Solution

The fourth proportional to 2,939.78, 4,407.35 and 2,012.52 is: 3,017.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.78 : 4,407.35 = 2,012.52 : x
  2. Step 2: Convert to fraction form
    2,939.78/4,407.35 = 2,012.52/x
  3. Step 3: Cross multiply
    2,939.78x = 4,407.35 × 2,012.52
  4. Step 4: Simplify right side
    2,939.78x = 8,869,903.47
  5. Step 5: Solve for x
    x = 8,869,903.47/2,939.78
  6. Step 6: Final answer
    x = 3,017.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.