Home / 8,139.60-12,213.45-4,632.30

Finding the Fourth Proportional to 8,139.60, 12,213.45 and 4,632.30

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Solution

The fourth proportional to 8,139.60, 12,213.45 and 4,632.30 is: 6,950.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.60 : 12,213.45 = 4,632.30 : x
  2. Step 2: Convert to fraction form
    8,139.60/12,213.45 = 4,632.30/x
  3. Step 3: Cross multiply
    8,139.60x = 12,213.45 × 4,632.30
  4. Step 4: Simplify right side
    8,139.60x = 56,576,364.44
  5. Step 5: Solve for x
    x = 56,576,364.44/8,139.60
  6. Step 6: Final answer
    x = 6,950.75

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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.