Home / 2,564.40-3,837.20-2,221.76

Finding the Fourth Proportional to 2,564.40, 3,837.20 and 2,221.76

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Solution

The fourth proportional to 2,564.40, 3,837.20 and 2,221.76 is: 3,324.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,564.40 : 3,837.20 = 2,221.76 : x
  2. Step 2: Convert to fraction form
    2,564.40/3,837.20 = 2,221.76/x
  3. Step 3: Cross multiply
    2,564.40x = 3,837.20 × 2,221.76
  4. Step 4: Simplify right side
    2,564.40x = 8,525,337.47
  5. Step 5: Solve for x
    x = 8,525,337.47/2,564.40
  6. Step 6: Final answer
    x = 3,324.50

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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.