Home / 5,640.54-8,460.35-2,520.72

Finding the Fourth Proportional to 5,640.54, 8,460.35 and 2,520.72

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Solution

The fourth proportional to 5,640.54, 8,460.35 and 2,520.72 is: 3,780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.54 : 8,460.35 = 2,520.72 : x
  2. Step 2: Convert to fraction form
    5,640.54/8,460.35 = 2,520.72/x
  3. Step 3: Cross multiply
    5,640.54x = 8,460.35 × 2,520.72
  4. Step 4: Simplify right side
    5,640.54x = 21,326,170.30
  5. Step 5: Solve for x
    x = 21,326,170.30/5,640.54
  6. Step 6: Final answer
    x = 3,780.88

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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.