Home / 7,919.20-10,928.16-4,382.08

Finding the Fourth Proportional to 7,919.20, 10,928.16 and 4,382.08

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Solution

The fourth proportional to 7,919.20, 10,928.16 and 4,382.08 is: 6,047.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.20 : 10,928.16 = 4,382.08 : x
  2. Step 2: Convert to fraction form
    7,919.20/10,928.16 = 4,382.08/x
  3. Step 3: Cross multiply
    7,919.20x = 10,928.16 × 4,382.08
  4. Step 4: Simplify right side
    7,919.20x = 47,888,071.37
  5. Step 5: Solve for x
    x = 47,888,071.37/7,919.20
  6. Step 6: Final answer
    x = 6,047.08

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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.