Home / 8,728.79-13,091.76-2,805.39

Finding the Fourth Proportional to 8,728.79, 13,091.76 and 2,805.39

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Solution

The fourth proportional to 8,728.79, 13,091.76 and 2,805.39 is: 4,207.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.79 : 13,091.76 = 2,805.39 : x
  2. Step 2: Convert to fraction form
    8,728.79/13,091.76 = 2,805.39/x
  3. Step 3: Cross multiply
    8,728.79x = 13,091.76 × 2,805.39
  4. Step 4: Simplify right side
    8,728.79x = 36,727,492.59
  5. Step 5: Solve for x
    x = 36,727,492.59/8,728.79
  6. Step 6: Final answer
    x = 4,207.63

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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.