Home / 7,919.12-10,928.40-4,382.24

Finding the Fourth Proportional to 7,919.12, 10,928.40 and 4,382.24

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Solution

The fourth proportional to 7,919.12, 10,928.40 and 4,382.24 is: 6,047.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.12 : 10,928.40 = 4,382.24 : x
  2. Step 2: Convert to fraction form
    7,919.12/10,928.40 = 4,382.24/x
  3. Step 3: Cross multiply
    7,919.12x = 10,928.40 × 4,382.24
  4. Step 4: Simplify right side
    7,919.12x = 47,890,871.62
  5. Step 5: Solve for x
    x = 47,890,871.62/7,919.12
  6. Step 6: Final answer
    x = 6,047.50

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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.