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Finding the Fourth Proportional to 2,480.40, 3,715.20 and 1,504.80

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Solution

The fourth proportional to 2,480.40, 3,715.20 and 1,504.80 is: 2,253.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.40 : 3,715.20 = 1,504.80 : x
  2. Step 2: Convert to fraction form
    2,480.40/3,715.20 = 1,504.80/x
  3. Step 3: Cross multiply
    2,480.40x = 3,715.20 × 1,504.80
  4. Step 4: Simplify right side
    2,480.40x = 5,590,632.96
  5. Step 5: Solve for x
    x = 5,590,632.96/2,480.40
  6. Step 6: Final answer
    x = 2,253.92

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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.