Home / 9,391.32-12,959.28-5,409.75

Finding the Fourth Proportional to 9,391.32, 12,959.28 and 5,409.75

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Solution

The fourth proportional to 9,391.32, 12,959.28 and 5,409.75 is: 7,465.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,391.32 : 12,959.28 = 5,409.75 : x
  2. Step 2: Convert to fraction form
    9,391.32/12,959.28 = 5,409.75/x
  3. Step 3: Cross multiply
    9,391.32x = 12,959.28 × 5,409.75
  4. Step 4: Simplify right side
    9,391.32x = 70,106,464.98
  5. Step 5: Solve for x
    x = 70,106,464.98/9,391.32
  6. Step 6: Final answer
    x = 7,465.03

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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.