Home / 3,615.20-4,989.01-2,123.13

Finding the Fourth Proportional to 3,615.20, 4,989.01 and 2,123.13

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Solution

The fourth proportional to 3,615.20, 4,989.01 and 2,123.13 is: 2,929.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.20 : 4,989.01 = 2,123.13 : x
  2. Step 2: Convert to fraction form
    3,615.20/4,989.01 = 2,123.13/x
  3. Step 3: Cross multiply
    3,615.20x = 4,989.01 × 2,123.13
  4. Step 4: Simplify right side
    3,615.20x = 10,592,316.80
  5. Step 5: Solve for x
    x = 10,592,316.80/3,615.20
  6. Step 6: Final answer
    x = 2,929.94

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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.