Home / 3,139.40-4,333.24-1,959.80

Finding the Fourth Proportional to 3,139.40, 4,333.24 and 1,959.80

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Solution

The fourth proportional to 3,139.40, 4,333.24 and 1,959.80 is: 2,705.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.40 : 4,333.24 = 1,959.80 : x
  2. Step 2: Convert to fraction form
    3,139.40/4,333.24 = 1,959.80/x
  3. Step 3: Cross multiply
    3,139.40x = 4,333.24 × 1,959.80
  4. Step 4: Simplify right side
    3,139.40x = 8,492,283.75
  5. Step 5: Solve for x
    x = 8,492,283.75/3,139.40
  6. Step 6: Final answer
    x = 2,705.07

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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.