Home / 5,412.13-8,118.23-1,902.13

Finding the Fourth Proportional to 5,412.13, 8,118.23 and 1,902.13

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Solution

The fourth proportional to 5,412.13, 8,118.23 and 1,902.13 is: 2,853.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.13 : 8,118.23 = 1,902.13 : x
  2. Step 2: Convert to fraction form
    5,412.13/8,118.23 = 1,902.13/x
  3. Step 3: Cross multiply
    5,412.13x = 8,118.23 × 1,902.13
  4. Step 4: Simplify right side
    5,412.13x = 15,441,928.83
  5. Step 5: Solve for x
    x = 15,441,928.83/5,412.13
  6. Step 6: Final answer
    x = 2,853.21

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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.