Home / 5,199.20-7,798.80-3,903.20

Finding the Fourth Proportional to 5,199.20, 7,798.80 and 3,903.20

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Solution

The fourth proportional to 5,199.20, 7,798.80 and 3,903.20 is: 5,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,199.20 : 7,798.80 = 3,903.20 : x
  2. Step 2: Convert to fraction form
    5,199.20/7,798.80 = 3,903.20/x
  3. Step 3: Cross multiply
    5,199.20x = 7,798.80 × 3,903.20
  4. Step 4: Simplify right side
    5,199.20x = 30,440,276.16
  5. Step 5: Solve for x
    x = 30,440,276.16/5,199.20
  6. Step 6: Final answer
    x = 5,854.80

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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.