Home / 10,615.20-15,926.90-3,219.72

Finding the Fourth Proportional to 10,615.20, 15,926.90 and 3,219.72

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Solution

The fourth proportional to 10,615.20, 15,926.90 and 3,219.72 is: 4,830.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,615.20 : 15,926.90 = 3,219.72 : x
  2. Step 2: Convert to fraction form
    10,615.20/15,926.90 = 3,219.72/x
  3. Step 3: Cross multiply
    10,615.20x = 15,926.90 × 3,219.72
  4. Step 4: Simplify right side
    10,615.20x = 51,280,158.47
  5. Step 5: Solve for x
    x = 51,280,158.47/10,615.20
  6. Step 6: Final answer
    x = 4,830.82

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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.