Home / 9,356.92-12,912.21-5,165.17

Finding the Fourth Proportional to 9,356.92, 12,912.21 and 5,165.17

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Solution

The fourth proportional to 9,356.92, 12,912.21 and 5,165.17 is: 7,127.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,356.92 : 12,912.21 = 5,165.17 : x
  2. Step 2: Convert to fraction form
    9,356.92/12,912.21 = 5,165.17/x
  3. Step 3: Cross multiply
    9,356.92x = 12,912.21 × 5,165.17
  4. Step 4: Simplify right side
    9,356.92x = 66,693,727.45
  5. Step 5: Solve for x
    x = 66,693,727.45/9,356.92
  6. Step 6: Final answer
    x = 7,127.75

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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.