Home / 3,005.40-4,508.10-814.08

Finding the Fourth Proportional to 3,005.40, 4,508.10 and 814.08

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Solution

The fourth proportional to 3,005.40, 4,508.10 and 814.08 is: 1,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.40 : 4,508.10 = 814.08 : x
  2. Step 2: Convert to fraction form
    3,005.40/4,508.10 = 814.08/x
  3. Step 3: Cross multiply
    3,005.40x = 4,508.10 × 814.08
  4. Step 4: Simplify right side
    3,005.40x = 3,669,954.05
  5. Step 5: Solve for x
    x = 3,669,954.05/3,005.40
  6. Step 6: Final answer
    x = 1,221.12

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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.