Home / 8,118.36-12,178.08-2,275.20

Finding the Fourth Proportional to 8,118.36, 12,178.08 and 2,275.20

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Solution

The fourth proportional to 8,118.36, 12,178.08 and 2,275.20 is: 3,412.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.36 : 12,178.08 = 2,275.20 : x
  2. Step 2: Convert to fraction form
    8,118.36/12,178.08 = 2,275.20/x
  3. Step 3: Cross multiply
    8,118.36x = 12,178.08 × 2,275.20
  4. Step 4: Simplify right side
    8,118.36x = 27,707,567.62
  5. Step 5: Solve for x
    x = 27,707,567.62/8,118.36
  6. Step 6: Final answer
    x = 3,412.95

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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.