Home / 8,971.07-12,380.20-4,938.39

Finding the Fourth Proportional to 8,971.07, 12,380.20 and 4,938.39

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Solution

The fourth proportional to 8,971.07, 12,380.20 and 4,938.39 is: 6,815.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.07 : 12,380.20 = 4,938.39 : x
  2. Step 2: Convert to fraction form
    8,971.07/12,380.20 = 4,938.39/x
  3. Step 3: Cross multiply
    8,971.07x = 12,380.20 × 4,938.39
  4. Step 4: Simplify right side
    8,971.07x = 61,138,197.11
  5. Step 5: Solve for x
    x = 61,138,197.11/8,971.07
  6. Step 6: Final answer
    x = 6,815.04

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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.