Home / 4,421.28-6,631.95-2,105.76

Finding the Fourth Proportional to 4,421.28, 6,631.95 and 2,105.76

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Solution

The fourth proportional to 4,421.28, 6,631.95 and 2,105.76 is: 3,158.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,421.28 : 6,631.95 = 2,105.76 : x
  2. Step 2: Convert to fraction form
    4,421.28/6,631.95 = 2,105.76/x
  3. Step 3: Cross multiply
    4,421.28x = 6,631.95 × 2,105.76
  4. Step 4: Simplify right side
    4,421.28x = 13,965,295.03
  5. Step 5: Solve for x
    x = 13,965,295.03/4,421.28
  6. Step 6: Final answer
    x = 3,158.65

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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.