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Finding the Fourth Proportional to 7,871.11, 10,860.98 and 4,514.06

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Solution

The fourth proportional to 7,871.11, 10,860.98 and 4,514.06 is: 6,228.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.11 : 10,860.98 = 4,514.06 : x
  2. Step 2: Convert to fraction form
    7,871.11/10,860.98 = 4,514.06/x
  3. Step 3: Cross multiply
    7,871.11x = 10,860.98 × 4,514.06
  4. Step 4: Simplify right side
    7,871.11x = 49,027,119.96
  5. Step 5: Solve for x
    x = 49,027,119.96/7,871.11
  6. Step 6: Final answer
    x = 6,228.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.