Home / 5,387.60-8,071.80-4,408.40

Finding the Fourth Proportional to 5,387.60, 8,071.80 and 4,408.40

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Solution

The fourth proportional to 5,387.60, 8,071.80 and 4,408.40 is: 6,604.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.60 : 8,071.80 = 4,408.40 : x
  2. Step 2: Convert to fraction form
    5,387.60/8,071.80 = 4,408.40/x
  3. Step 3: Cross multiply
    5,387.60x = 8,071.80 × 4,408.40
  4. Step 4: Simplify right side
    5,387.60x = 35,583,723.12
  5. Step 5: Solve for x
    x = 35,583,723.12/5,387.60
  6. Step 6: Final answer
    x = 6,604.74

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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.