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Finding the Fourth Proportional to 9,362.87, 12,891.29 and 7,943.62

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Solution

The fourth proportional to 9,362.87, 12,891.29 and 7,943.62 is: 10,937.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.87 : 12,891.29 = 7,943.62 : x
  2. Step 2: Convert to fraction form
    9,362.87/12,891.29 = 7,943.62/x
  3. Step 3: Cross multiply
    9,362.87x = 12,891.29 × 7,943.62
  4. Step 4: Simplify right side
    9,362.87x = 102,403,437.12
  5. Step 5: Solve for x
    x = 102,403,437.12/9,362.87
  6. Step 6: Final answer
    x = 10,937.18

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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.