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Finding the Fourth Proportional to 4,552.80, 6,284.40 and 3,938.40

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Solution

The fourth proportional to 4,552.80, 6,284.40 and 3,938.40 is: 5,436.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,552.80 : 6,284.40 = 3,938.40 : x
  2. Step 2: Convert to fraction form
    4,552.80/6,284.40 = 3,938.40/x
  3. Step 3: Cross multiply
    4,552.80x = 6,284.40 × 3,938.40
  4. Step 4: Simplify right side
    4,552.80x = 24,750,480.96
  5. Step 5: Solve for x
    x = 24,750,480.96/4,552.80
  6. Step 6: Final answer
    x = 5,436.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.