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Finding the Fourth Proportional to 2,137.95, 3,201.80 and 1,095.21

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Solution

The fourth proportional to 2,137.95, 3,201.80 and 1,095.21 is: 1,640.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.95 : 3,201.80 = 1,095.21 : x
  2. Step 2: Convert to fraction form
    2,137.95/3,201.80 = 1,095.21/x
  3. Step 3: Cross multiply
    2,137.95x = 3,201.80 × 1,095.21
  4. Step 4: Simplify right side
    2,137.95x = 3,506,637.90
  5. Step 5: Solve for x
    x = 3,506,637.90/2,137.95
  6. Step 6: Final answer
    x = 1,640.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.