Home / 4,986.80-7,470.84-4,170.32

Finding the Fourth Proportional to 4,986.80, 7,470.84 and 4,170.32

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Solution

The fourth proportional to 4,986.80, 7,470.84 and 4,170.32 is: 6,247.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.80 : 7,470.84 = 4,170.32 : x
  2. Step 2: Convert to fraction form
    4,986.80/7,470.84 = 4,170.32/x
  3. Step 3: Cross multiply
    4,986.80x = 7,470.84 × 4,170.32
  4. Step 4: Simplify right side
    4,986.80x = 31,155,793.47
  5. Step 5: Solve for x
    x = 31,155,793.47/4,986.80
  6. Step 6: Final answer
    x = 6,247.65

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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.