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Finding the Fourth Proportional to 3,480.87, 4,803.16 and 1,988.89

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Solution

The fourth proportional to 3,480.87, 4,803.16 and 1,988.89 is: 2,744.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.87 : 4,803.16 = 1,988.89 : x
  2. Step 2: Convert to fraction form
    3,480.87/4,803.16 = 1,988.89/x
  3. Step 3: Cross multiply
    3,480.87x = 4,803.16 × 1,988.89
  4. Step 4: Simplify right side
    3,480.87x = 9,552,943.75
  5. Step 5: Solve for x
    x = 9,552,943.75/3,480.87
  6. Step 6: Final answer
    x = 2,744.41

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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.