Home / 3,412.29-5,118.21-913.44

Finding the Fourth Proportional to 3,412.29, 5,118.21 and 913.44

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Solution

The fourth proportional to 3,412.29, 5,118.21 and 913.44 is: 1,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.29 : 5,118.21 = 913.44 : x
  2. Step 2: Convert to fraction form
    3,412.29/5,118.21 = 913.44/x
  3. Step 3: Cross multiply
    3,412.29x = 5,118.21 × 913.44
  4. Step 4: Simplify right side
    3,412.29x = 4,675,177.74
  5. Step 5: Solve for x
    x = 4,675,177.74/3,412.29
  6. Step 6: Final answer
    x = 1,370.10

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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.