Home / 5,351.11-7,380.39-4,089.03

Finding the Fourth Proportional to 5,351.11, 7,380.39 and 4,089.03

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Solution

The fourth proportional to 5,351.11, 7,380.39 and 4,089.03 is: 5,639.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,351.11 : 7,380.39 = 4,089.03 : x
  2. Step 2: Convert to fraction form
    5,351.11/7,380.39 = 4,089.03/x
  3. Step 3: Cross multiply
    5,351.11x = 7,380.39 × 4,089.03
  4. Step 4: Simplify right side
    5,351.11x = 30,178,653.79
  5. Step 5: Solve for x
    x = 30,178,653.79/5,351.11
  6. Step 6: Final answer
    x = 5,639.70

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.