Home / 3,289.60-4,934.40-2,123.20

Finding the Fourth Proportional to 3,289.60, 4,934.40 and 2,123.20

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Solution

The fourth proportional to 3,289.60, 4,934.40 and 2,123.20 is: 3,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.60 : 4,934.40 = 2,123.20 : x
  2. Step 2: Convert to fraction form
    3,289.60/4,934.40 = 2,123.20/x
  3. Step 3: Cross multiply
    3,289.60x = 4,934.40 × 2,123.20
  4. Step 4: Simplify right side
    3,289.60x = 10,476,718.08
  5. Step 5: Solve for x
    x = 10,476,718.08/3,289.60
  6. Step 6: Final answer
    x = 3,184.80

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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.