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Finding the Fourth Proportional to 9,362.88, 12,891.29 and 7,943.63

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Solution

The fourth proportional to 9,362.88, 12,891.29 and 7,943.63 is: 10,937.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.88 : 12,891.29 = 7,943.63 : x
  2. Step 2: Convert to fraction form
    9,362.88/12,891.29 = 7,943.63/x
  3. Step 3: Cross multiply
    9,362.88x = 12,891.29 × 7,943.63
  4. Step 4: Simplify right side
    9,362.88x = 102,403,533.81
  5. Step 5: Solve for x
    x = 102,403,533.81/9,362.88
  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.