Home / 9,356.79-12,912.38-5,165.04

Finding the Fourth Proportional to 9,356.79, 12,912.38 and 5,165.04

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Solution

The fourth proportional to 9,356.79, 12,912.38 and 5,165.04 is: 7,127.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,356.79 : 12,912.38 = 5,165.04 : x
  2. Step 2: Convert to fraction form
    9,356.79/12,912.38 = 5,165.04/x
  3. Step 3: Cross multiply
    9,356.79x = 12,912.38 × 5,165.04
  4. Step 4: Simplify right side
    9,356.79x = 66,692,959.20
  5. Step 5: Solve for x
    x = 66,692,959.20/9,356.79
  6. Step 6: Final answer
    x = 7,127.76

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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.