Home / 2,800.34-3,864.47-1,621.41

Finding the Fourth Proportional to 2,800.34, 3,864.47 and 1,621.41

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Solution

The fourth proportional to 2,800.34, 3,864.47 and 1,621.41 is: 2,237.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.34 : 3,864.47 = 1,621.41 : x
  2. Step 2: Convert to fraction form
    2,800.34/3,864.47 = 1,621.41/x
  3. Step 3: Cross multiply
    2,800.34x = 3,864.47 × 1,621.41
  4. Step 4: Simplify right side
    2,800.34x = 6,265,882.20
  5. Step 5: Solve for x
    x = 6,265,882.20/2,800.34
  6. Step 6: Final answer
    x = 2,237.55

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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.