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Finding the Fourth Proportional to 2,800.56, 3,864.42 and 1,621.62

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Solution

The fourth proportional to 2,800.56, 3,864.42 and 1,621.62 is: 2,237.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.56 : 3,864.42 = 1,621.62 : x
  2. Step 2: Convert to fraction form
    2,800.56/3,864.42 = 1,621.62/x
  3. Step 3: Cross multiply
    2,800.56x = 3,864.42 × 1,621.62
  4. Step 4: Simplify right side
    2,800.56x = 6,266,620.76
  5. Step 5: Solve for x
    x = 6,266,620.76/2,800.56
  6. Step 6: Final answer
    x = 2,237.63

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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.