Home / 8,540.90-12,811.35-2,698.10

Finding the Fourth Proportional to 8,540.90, 12,811.35 and 2,698.10

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Solution

The fourth proportional to 8,540.90, 12,811.35 and 2,698.10 is: 4,047.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540.90 : 12,811.35 = 2,698.10 : x
  2. Step 2: Convert to fraction form
    8,540.90/12,811.35 = 2,698.10/x
  3. Step 3: Cross multiply
    8,540.90x = 12,811.35 × 2,698.10
  4. Step 4: Simplify right side
    8,540.90x = 34,566,303.44
  5. Step 5: Solve for x
    x = 34,566,303.44/8,540.90
  6. Step 6: Final answer
    x = 4,047.15

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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.