Home / 8,316.21-11,478.33-4,781.47

Finding the Fourth Proportional to 8,316.21, 11,478.33 and 4,781.47

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Solution

The fourth proportional to 8,316.21, 11,478.33 and 4,781.47 is: 6,599.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.21 : 11,478.33 = 4,781.47 : x
  2. Step 2: Convert to fraction form
    8,316.21/11,478.33 = 4,781.47/x
  3. Step 3: Cross multiply
    8,316.21x = 11,478.33 × 4,781.47
  4. Step 4: Simplify right side
    8,316.21x = 54,883,290.55
  5. Step 5: Solve for x
    x = 54,883,290.55/8,316.21
  6. Step 6: Final answer
    x = 6,599.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.