Home / 3,239.49-4,858.20-1,390.11

Finding the Fourth Proportional to 3,239.49, 4,858.20 and 1,390.11

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Solution

The fourth proportional to 3,239.49, 4,858.20 and 1,390.11 is: 2,084.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.49 : 4,858.20 = 1,390.11 : x
  2. Step 2: Convert to fraction form
    3,239.49/4,858.20 = 1,390.11/x
  3. Step 3: Cross multiply
    3,239.49x = 4,858.20 × 1,390.11
  4. Step 4: Simplify right side
    3,239.49x = 6,753,432.40
  5. Step 5: Solve for x
    x = 6,753,432.40/3,239.49
  6. Step 6: Final answer
    x = 2,084.72

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1.5x scale

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.