Home / 3,870.26-5,341.02-2,101.86

Finding the Fourth Proportional to 3,870.26, 5,341.02 and 2,101.86

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Solution

The fourth proportional to 3,870.26, 5,341.02 and 2,101.86 is: 2,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.26 : 5,341.02 = 2,101.86 : x
  2. Step 2: Convert to fraction form
    3,870.26/5,341.02 = 2,101.86/x
  3. Step 3: Cross multiply
    3,870.26x = 5,341.02 × 2,101.86
  4. Step 4: Simplify right side
    3,870.26x = 11,226,076.30
  5. Step 5: Solve for x
    x = 11,226,076.30/3,870.26
  6. Step 6: Final answer
    x = 2,900.60

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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.