Home / 8,971.50-12,382.29-5,197.08

Finding the Fourth Proportional to 8,971.50, 12,382.29 and 5,197.08

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Solution

The fourth proportional to 8,971.50, 12,382.29 and 5,197.08 is: 7,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.50 : 12,382.29 = 5,197.08 : x
  2. Step 2: Convert to fraction form
    8,971.50/12,382.29 = 5,197.08/x
  3. Step 3: Cross multiply
    8,971.50x = 12,382.29 × 5,197.08
  4. Step 4: Simplify right side
    8,971.50x = 64,351,751.71
  5. Step 5: Solve for x
    x = 64,351,751.71/8,971.50
  6. Step 6: Final answer
    x = 7,172.91

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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.