Home / 10,642.64-15,964.68-3,619.76

Finding the Fourth Proportional to 10,642.64, 15,964.68 and 3,619.76

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Solution

The fourth proportional to 10,642.64, 15,964.68 and 3,619.76 is: 5,429.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,642.64 : 15,964.68 = 3,619.76 : x
  2. Step 2: Convert to fraction form
    10,642.64/15,964.68 = 3,619.76/x
  3. Step 3: Cross multiply
    10,642.64x = 15,964.68 × 3,619.76
  4. Step 4: Simplify right side
    10,642.64x = 57,788,310.08
  5. Step 5: Solve for x
    x = 57,788,310.08/10,642.64
  6. Step 6: Final answer
    x = 5,429.88

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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.