Home / 8,320.16-12,476.60-3,122.39

Finding the Fourth Proportional to 8,320.16, 12,476.60 and 3,122.39

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Solution

The fourth proportional to 8,320.16, 12,476.60 and 3,122.39 is: 4,682.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.16 : 12,476.60 = 3,122.39 : x
  2. Step 2: Convert to fraction form
    8,320.16/12,476.60 = 3,122.39/x
  3. Step 3: Cross multiply
    8,320.16x = 12,476.60 × 3,122.39
  4. Step 4: Simplify right side
    8,320.16x = 38,956,733.08
  5. Step 5: Solve for x
    x = 38,956,733.08/8,320.16
  6. Step 6: Final answer
    x = 4,682.21

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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.