Home / 9,389.28-12,956.16-5,409.60

Finding the Fourth Proportional to 9,389.28, 12,956.16 and 5,409.60

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Solution

The fourth proportional to 9,389.28, 12,956.16 and 5,409.60 is: 7,464.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.28 : 12,956.16 = 5,409.60 : x
  2. Step 2: Convert to fraction form
    9,389.28/12,956.16 = 5,409.60/x
  3. Step 3: Cross multiply
    9,389.28x = 12,956.16 × 5,409.60
  4. Step 4: Simplify right side
    9,389.28x = 70,087,643.14
  5. Step 5: Solve for x
    x = 70,087,643.14/9,389.28
  6. Step 6: Final answer
    x = 7,464.65

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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.