Home / 8,031.33-12,045.78-2,188.40

Finding the Fourth Proportional to 8,031.33, 12,045.78 and 2,188.40

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Solution

The fourth proportional to 8,031.33, 12,045.78 and 2,188.40 is: 3,282.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,031.33 : 12,045.78 = 2,188.40 : x
  2. Step 2: Convert to fraction form
    8,031.33/12,045.78 = 2,188.40/x
  3. Step 3: Cross multiply
    8,031.33x = 12,045.78 × 2,188.40
  4. Step 4: Simplify right side
    8,031.33x = 26,360,984.95
  5. Step 5: Solve for x
    x = 26,360,984.95/8,031.33
  6. Step 6: Final answer
    x = 3,282.27

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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.