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Finding the Fourth Proportional to 9,711.96, 13,402.80 and 5,736.48

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Solution

The fourth proportional to 9,711.96, 13,402.80 and 5,736.48 is: 7,916.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,711.96 : 13,402.80 = 5,736.48 : x
  2. Step 2: Convert to fraction form
    9,711.96/13,402.80 = 5,736.48/x
  3. Step 3: Cross multiply
    9,711.96x = 13,402.80 × 5,736.48
  4. Step 4: Simplify right side
    9,711.96x = 76,884,894.14
  5. Step 5: Solve for x
    x = 76,884,894.14/9,711.96
  6. Step 6: Final answer
    x = 7,916.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.