Home / 4,750.80-7,115.40-2,439.60

Finding the Fourth Proportional to 4,750.80, 7,115.40 and 2,439.60

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Solution

The fourth proportional to 4,750.80, 7,115.40 and 2,439.60 is: 3,653.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,750.80 : 7,115.40 = 2,439.60 : x
  2. Step 2: Convert to fraction form
    4,750.80/7,115.40 = 2,439.60/x
  3. Step 3: Cross multiply
    4,750.80x = 7,115.40 × 2,439.60
  4. Step 4: Simplify right side
    4,750.80x = 17,358,729.84
  5. Step 5: Solve for x
    x = 17,358,729.84/4,750.80
  6. Step 6: Final answer
    x = 3,653.85

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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.