Home / 5,385.36-8,071.80-3,630.72

Finding the Fourth Proportional to 5,385.36, 8,071.80 and 3,630.72

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Solution

The fourth proportional to 5,385.36, 8,071.80 and 3,630.72 is: 5,441.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.36 : 8,071.80 = 3,630.72 : x
  2. Step 2: Convert to fraction form
    5,385.36/8,071.80 = 3,630.72/x
  3. Step 3: Cross multiply
    5,385.36x = 8,071.80 × 3,630.72
  4. Step 4: Simplify right side
    5,385.36x = 29,306,445.70
  5. Step 5: Solve for x
    x = 29,306,445.70/5,385.36
  6. Step 6: Final answer
    x = 5,441.87

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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.