Home / 1,638.48-2,470.08-1,532.79

Finding the Fourth Proportional to 1,638.48, 2,470.08 and 1,532.79

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Solution

The fourth proportional to 1,638.48, 2,470.08 and 1,532.79 is: 2,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.48 : 2,470.08 = 1,532.79 : x
  2. Step 2: Convert to fraction form
    1,638.48/2,470.08 = 1,532.79/x
  3. Step 3: Cross multiply
    1,638.48x = 2,470.08 × 1,532.79
  4. Step 4: Simplify right side
    1,638.48x = 3,786,113.92
  5. Step 5: Solve for x
    x = 3,786,113.92/1,638.48
  6. Step 6: Final answer
    x = 2,310.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.