Home / 3,248.20-4,876.80-2,085.40

Finding the Fourth Proportional to 3,248.20, 4,876.80 and 2,085.40

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Solution

The fourth proportional to 3,248.20, 4,876.80 and 2,085.40 is: 3,130.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,248.20 : 4,876.80 = 2,085.40 : x
  2. Step 2: Convert to fraction form
    3,248.20/4,876.80 = 2,085.40/x
  3. Step 3: Cross multiply
    3,248.20x = 4,876.80 × 2,085.40
  4. Step 4: Simplify right side
    3,248.20x = 10,170,078.72
  5. Step 5: Solve for x
    x = 10,170,078.72/3,248.20
  6. Step 6: Final answer
    x = 3,130.99

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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.