Home / 1,977.26-2,726.08-1,621.90

Finding the Fourth Proportional to 1,977.26, 2,726.08 and 1,621.90

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Solution

The fourth proportional to 1,977.26, 2,726.08 and 1,621.90 is: 2,236.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.26 : 2,726.08 = 1,621.90 : x
  2. Step 2: Convert to fraction form
    1,977.26/2,726.08 = 1,621.90/x
  3. Step 3: Cross multiply
    1,977.26x = 2,726.08 × 1,621.90
  4. Step 4: Simplify right side
    1,977.26x = 4,421,429.15
  5. Step 5: Solve for x
    x = 4,421,429.15/1,977.26
  6. Step 6: Final answer
    x = 2,236.14

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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.