Home / 8,430.40-12,642.36-3,236.68

Finding the Fourth Proportional to 8,430.40, 12,642.36 and 3,236.68

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Solution

The fourth proportional to 8,430.40, 12,642.36 and 3,236.68 is: 4,853.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.40 : 12,642.36 = 3,236.68 : x
  2. Step 2: Convert to fraction form
    8,430.40/12,642.36 = 3,236.68/x
  3. Step 3: Cross multiply
    8,430.40x = 12,642.36 × 3,236.68
  4. Step 4: Simplify right side
    8,430.40x = 40,919,273.76
  5. Step 5: Solve for x
    x = 40,919,273.76/8,430.40
  6. Step 6: Final answer
    x = 4,853.78

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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.