Home / 9,356.19-12,912.03-5,378.64

Finding the Fourth Proportional to 9,356.19, 12,912.03 and 5,378.64

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Solution

The fourth proportional to 9,356.19, 12,912.03 and 5,378.64 is: 7,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,356.19 : 12,912.03 = 5,378.64 : x
  2. Step 2: Convert to fraction form
    9,356.19/12,912.03 = 5,378.64/x
  3. Step 3: Cross multiply
    9,356.19x = 12,912.03 × 5,378.64
  4. Step 4: Simplify right side
    9,356.19x = 69,449,161.04
  5. Step 5: Solve for x
    x = 69,449,161.04/9,356.19
  6. Step 6: Final answer
    x = 7,422.80

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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.