Home / 9,478.20-13,080.12-5,229.48

Finding the Fourth Proportional to 9,478.20, 13,080.12 and 5,229.48

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Solution

The fourth proportional to 9,478.20, 13,080.12 and 5,229.48 is: 7,216.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,478.20 : 13,080.12 = 5,229.48 : x
  2. Step 2: Convert to fraction form
    9,478.20/13,080.12 = 5,229.48/x
  3. Step 3: Cross multiply
    9,478.20x = 13,080.12 × 5,229.48
  4. Step 4: Simplify right side
    9,478.20x = 68,402,225.94
  5. Step 5: Solve for x
    x = 68,402,225.94/9,478.20
  6. Step 6: Final answer
    x = 7,216.79

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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.