Home / 5,234.80-7,856.76-2,771.40

Finding the Fourth Proportional to 5,234.80, 7,856.76 and 2,771.40

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Solution

The fourth proportional to 5,234.80, 7,856.76 and 2,771.40 is: 4,159.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,234.80 : 7,856.76 = 2,771.40 : x
  2. Step 2: Convert to fraction form
    5,234.80/7,856.76 = 2,771.40/x
  3. Step 3: Cross multiply
    5,234.80x = 7,856.76 × 2,771.40
  4. Step 4: Simplify right side
    5,234.80x = 21,774,224.66
  5. Step 5: Solve for x
    x = 21,774,224.66/5,234.80
  6. Step 6: Final answer
    x = 4,159.51

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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.