Home / 5,257.11-7,885.63-1,971.75

Finding the Fourth Proportional to 5,257.11, 7,885.63 and 1,971.75

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Solution

The fourth proportional to 5,257.11, 7,885.63 and 1,971.75 is: 2,957.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,257.11 : 7,885.63 = 1,971.75 : x
  2. Step 2: Convert to fraction form
    5,257.11/7,885.63 = 1,971.75/x
  3. Step 3: Cross multiply
    5,257.11x = 7,885.63 × 1,971.75
  4. Step 4: Simplify right side
    5,257.11x = 15,548,490.95
  5. Step 5: Solve for x
    x = 15,548,490.95/5,257.11
  6. Step 6: Final answer
    x = 2,957.61

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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.