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Finding the Fourth Proportional to 8,574.15, 12,860.88 and 2,650.79

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Solution

The fourth proportional to 8,574.15, 12,860.88 and 2,650.79 is: 3,976.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574.15 : 12,860.88 = 2,650.79 : x
  2. Step 2: Convert to fraction form
    8,574.15/12,860.88 = 2,650.79/x
  3. Step 3: Cross multiply
    8,574.15x = 12,860.88 × 2,650.79
  4. Step 4: Simplify right side
    8,574.15x = 34,091,514.31
  5. Step 5: Solve for x
    x = 34,091,514.31/8,574.15
  6. Step 6: Final answer
    x = 3,976.08

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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.