Home / 4,889.20-7,314.60-4,428.40

Finding the Fourth Proportional to 4,889.20, 7,314.60 and 4,428.40

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Solution

The fourth proportional to 4,889.20, 7,314.60 and 4,428.40 is: 6,625.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,889.20 : 7,314.60 = 4,428.40 : x
  2. Step 2: Convert to fraction form
    4,889.20/7,314.60 = 4,428.40/x
  3. Step 3: Cross multiply
    4,889.20x = 7,314.60 × 4,428.40
  4. Step 4: Simplify right side
    4,889.20x = 32,391,974.64
  5. Step 5: Solve for x
    x = 32,391,974.64/4,889.20
  6. Step 6: Final answer
    x = 6,625.21

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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.