Home / 8,475.20-12,711.36-2,928.32

Finding the Fourth Proportional to 8,475.20, 12,711.36 and 2,928.32

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Solution

The fourth proportional to 8,475.20, 12,711.36 and 2,928.32 is: 4,391.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,475.20 : 12,711.36 = 2,928.32 : x
  2. Step 2: Convert to fraction form
    8,475.20/12,711.36 = 2,928.32/x
  3. Step 3: Cross multiply
    8,475.20x = 12,711.36 × 2,928.32
  4. Step 4: Simplify right side
    8,475.20x = 37,222,929.72
  5. Step 5: Solve for x
    x = 37,222,929.72/8,475.20
  6. Step 6: Final answer
    x = 4,391.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.