Home / 4,885.20-7,327.80-4,309.20

Finding the Fourth Proportional to 4,885.20, 7,327.80 and 4,309.20

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Solution

The fourth proportional to 4,885.20, 7,327.80 and 4,309.20 is: 6,463.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.20 : 7,327.80 = 4,309.20 : x
  2. Step 2: Convert to fraction form
    4,885.20/7,327.80 = 4,309.20/x
  3. Step 3: Cross multiply
    4,885.20x = 7,327.80 × 4,309.20
  4. Step 4: Simplify right side
    4,885.20x = 31,576,955.76
  5. Step 5: Solve for x
    x = 31,576,955.76/4,885.20
  6. Step 6: Final answer
    x = 6,463.80

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Similar ratio
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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.