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Finding the Fourth Proportional to 3,177.47, 4,766.25 and 986.06

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Solution

The fourth proportional to 3,177.47, 4,766.25 and 986.06 is: 1,479.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.47 : 4,766.25 = 986.06 : x
  2. Step 2: Convert to fraction form
    3,177.47/4,766.25 = 986.06/x
  3. Step 3: Cross multiply
    3,177.47x = 4,766.25 × 986.06
  4. Step 4: Simplify right side
    3,177.47x = 4,699,824.09
  5. Step 5: Solve for x
    x = 4,699,824.09/3,177.47
  6. Step 6: Final answer
    x = 1,479.11

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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.