Home / 4,281.20-6,422.70-2,430.80

Finding the Fourth Proportional to 4,281.20, 6,422.70 and 2,430.80

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Solution

The fourth proportional to 4,281.20, 6,422.70 and 2,430.80 is: 3,646.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,281.20 : 6,422.70 = 2,430.80 : x
  2. Step 2: Convert to fraction form
    4,281.20/6,422.70 = 2,430.80/x
  3. Step 3: Cross multiply
    4,281.20x = 6,422.70 × 2,430.80
  4. Step 4: Simplify right side
    4,281.20x = 15,612,299.16
  5. Step 5: Solve for x
    x = 15,612,299.16/4,281.20
  6. Step 6: Final answer
    x = 3,646.71

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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.