Home / 8,031.28-12,045.06-2,186.72

Finding the Fourth Proportional to 8,031.28, 12,045.06 and 2,186.72

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Solution

The fourth proportional to 8,031.28, 12,045.06 and 2,186.72 is: 3,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,031.28 : 12,045.06 = 2,186.72 : x
  2. Step 2: Convert to fraction form
    8,031.28/12,045.06 = 2,186.72/x
  3. Step 3: Cross multiply
    8,031.28x = 12,045.06 × 2,186.72
  4. Step 4: Simplify right side
    8,031.28x = 26,339,173.60
  5. Step 5: Solve for x
    x = 26,339,173.60/8,031.28
  6. Step 6: Final answer
    x = 3,279.57

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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.