Home / 5,556.20-7,657.02-3,981.56

Finding the Fourth Proportional to 5,556.20, 7,657.02 and 3,981.56

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Solution

The fourth proportional to 5,556.20, 7,657.02 and 3,981.56 is: 5,487.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,556.20 : 7,657.02 = 3,981.56 : x
  2. Step 2: Convert to fraction form
    5,556.20/7,657.02 = 3,981.56/x
  3. Step 3: Cross multiply
    5,556.20x = 7,657.02 × 3,981.56
  4. Step 4: Simplify right side
    5,556.20x = 30,486,884.55
  5. Step 5: Solve for x
    x = 30,486,884.55/5,556.20
  6. Step 6: Final answer
    x = 5,487.00

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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.