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Finding the Fourth Proportional to 2,859.78, 4,290.02 and 1,010.52

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Solution

The fourth proportional to 2,859.78, 4,290.02 and 1,010.52 is: 1,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.78 : 4,290.02 = 1,010.52 : x
  2. Step 2: Convert to fraction form
    2,859.78/4,290.02 = 1,010.52/x
  3. Step 3: Cross multiply
    2,859.78x = 4,290.02 × 1,010.52
  4. Step 4: Simplify right side
    2,859.78x = 4,335,145.96
  5. Step 5: Solve for x
    x = 4,335,145.96/2,859.78
  6. Step 6: Final answer
    x = 1,515.90

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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.