Home / 10,479.19-15,719.88-3,457.15

Finding the Fourth Proportional to 10,479.19, 15,719.88 and 3,457.15

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Solution

The fourth proportional to 10,479.19, 15,719.88 and 3,457.15 is: 5,186.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.19 : 15,719.88 = 3,457.15 : x
  2. Step 2: Convert to fraction form
    10,479.19/15,719.88 = 3,457.15/x
  3. Step 3: Cross multiply
    10,479.19x = 15,719.88 × 3,457.15
  4. Step 4: Simplify right side
    10,479.19x = 54,345,983.14
  5. Step 5: Solve for x
    x = 54,345,983.14/10,479.19
  6. Step 6: Final answer
    x = 5,186.09

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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.