Home / 5,531.12-7,632.56-3,172.80

Finding the Fourth Proportional to 5,531.12, 7,632.56 and 3,172.80

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Solution

The fourth proportional to 5,531.12, 7,632.56 and 3,172.80 is: 4,378.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,531.12 : 7,632.56 = 3,172.80 : x
  2. Step 2: Convert to fraction form
    5,531.12/7,632.56 = 3,172.80/x
  3. Step 3: Cross multiply
    5,531.12x = 7,632.56 × 3,172.80
  4. Step 4: Simplify right side
    5,531.12x = 24,216,586.37
  5. Step 5: Solve for x
    x = 24,216,586.37/5,531.12
  6. Step 6: Final answer
    x = 4,378.24

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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.