Home / 4,980.12-7,478.61-4,781.46

Finding the Fourth Proportional to 4,980.12, 7,478.61 and 4,781.46

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Solution

The fourth proportional to 4,980.12, 7,478.61 and 4,781.46 is: 7,180.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.12 : 7,478.61 = 4,781.46 : x
  2. Step 2: Convert to fraction form
    4,980.12/7,478.61 = 4,781.46/x
  3. Step 3: Cross multiply
    4,980.12x = 7,478.61 × 4,781.46
  4. Step 4: Simplify right side
    4,980.12x = 35,758,674.57
  5. Step 5: Solve for x
    x = 35,758,674.57/4,980.12
  6. Step 6: Final answer
    x = 7,180.28

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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.