Home / 8,316.42-12,480.06-3,122.28

Finding the Fourth Proportional to 8,316.42, 12,480.06 and 3,122.28

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Solution

The fourth proportional to 8,316.42, 12,480.06 and 3,122.28 is: 4,685.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.42 : 12,480.06 = 3,122.28 : x
  2. Step 2: Convert to fraction form
    8,316.42/12,480.06 = 3,122.28/x
  3. Step 3: Cross multiply
    8,316.42x = 12,480.06 × 3,122.28
  4. Step 4: Simplify right side
    8,316.42x = 38,966,241.74
  5. Step 5: Solve for x
    x = 38,966,241.74/8,316.42
  6. Step 6: Final answer
    x = 4,685.46

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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.