Home / 3,240.98-4,470.92-2,123.80

Finding the Fourth Proportional to 3,240.98, 4,470.92 and 2,123.80

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Solution

The fourth proportional to 3,240.98, 4,470.92 and 2,123.80 is: 2,929.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.98 : 4,470.92 = 2,123.80 : x
  2. Step 2: Convert to fraction form
    3,240.98/4,470.92 = 2,123.80/x
  3. Step 3: Cross multiply
    3,240.98x = 4,470.92 × 2,123.80
  4. Step 4: Simplify right side
    3,240.98x = 9,495,339.90
  5. Step 5: Solve for x
    x = 9,495,339.90/3,240.98
  6. Step 6: Final answer
    x = 2,929.77

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1.5x scale

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.