Home / 6,430.28-9,629.76-4,236.80

Finding the Fourth Proportional to 6,430.28, 9,629.76 and 4,236.80

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Solution

The fourth proportional to 6,430.28, 9,629.76 and 4,236.80 is: 6,344.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.28 : 9,629.76 = 4,236.80 : x
  2. Step 2: Convert to fraction form
    6,430.28/9,629.76 = 4,236.80/x
  3. Step 3: Cross multiply
    6,430.28x = 9,629.76 × 4,236.80
  4. Step 4: Simplify right side
    6,430.28x = 40,799,367.17
  5. Step 5: Solve for x
    x = 40,799,367.17/6,430.28
  6. Step 6: Final answer
    x = 6,344.88

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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.