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Finding the Fourth Proportional to 6,751.78, 10,131.45 and 2,859.10

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Solution

The fourth proportional to 6,751.78, 10,131.45 and 2,859.10 is: 4,290.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,751.78 : 10,131.45 = 2,859.10 : x
  2. Step 2: Convert to fraction form
    6,751.78/10,131.45 = 2,859.10/x
  3. Step 3: Cross multiply
    6,751.78x = 10,131.45 × 2,859.10
  4. Step 4: Simplify right side
    6,751.78x = 28,966,828.70
  5. Step 5: Solve for x
    x = 28,966,828.70/6,751.78
  6. Step 6: Final answer
    x = 4,290.25

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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.