Home / 8,118.42-12,178.06-2,572.35

Finding the Fourth Proportional to 8,118.42, 12,178.06 and 2,572.35

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Solution

The fourth proportional to 8,118.42, 12,178.06 and 2,572.35 is: 3,858.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.42 : 12,178.06 = 2,572.35 : x
  2. Step 2: Convert to fraction form
    8,118.42/12,178.06 = 2,572.35/x
  3. Step 3: Cross multiply
    8,118.42x = 12,178.06 × 2,572.35
  4. Step 4: Simplify right side
    8,118.42x = 31,326,232.64
  5. Step 5: Solve for x
    x = 31,326,232.64/8,118.42
  6. Step 6: Final answer
    x = 3,858.66

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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.