Home / 4,760.20-7,138.48-1,988.18

Finding the Fourth Proportional to 4,760.20, 7,138.48 and 1,988.18

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Solution

The fourth proportional to 4,760.20, 7,138.48 and 1,988.18 is: 2,981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,760.20 : 7,138.48 = 1,988.18 : x
  2. Step 2: Convert to fraction form
    4,760.20/7,138.48 = 1,988.18/x
  3. Step 3: Cross multiply
    4,760.20x = 7,138.48 × 1,988.18
  4. Step 4: Simplify right side
    4,760.20x = 14,192,583.17
  5. Step 5: Solve for x
    x = 14,192,583.17/4,760.20
  6. Step 6: Final answer
    x = 2,981.51

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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.