Home / 3,139.02-4,331.70-1,722.68

Finding the Fourth Proportional to 3,139.02, 4,331.70 and 1,722.68

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Solution

The fourth proportional to 3,139.02, 4,331.70 and 1,722.68 is: 2,377.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.02 : 4,331.70 = 1,722.68 : x
  2. Step 2: Convert to fraction form
    3,139.02/4,331.70 = 1,722.68/x
  3. Step 3: Cross multiply
    3,139.02x = 4,331.70 × 1,722.68
  4. Step 4: Simplify right side
    3,139.02x = 7,462,111.30
  5. Step 5: Solve for x
    x = 7,462,111.30/3,139.02
  6. Step 6: Final answer
    x = 2,377.21

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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.