Home / 1,637.11-2,259.26-891.12

Finding the Fourth Proportional to 1,637.11, 2,259.26 and 891.12

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Solution

The fourth proportional to 1,637.11, 2,259.26 and 891.12 is: 1,229.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.11 : 2,259.26 = 891.12 : x
  2. Step 2: Convert to fraction form
    1,637.11/2,259.26 = 891.12/x
  3. Step 3: Cross multiply
    1,637.11x = 2,259.26 × 891.12
  4. Step 4: Simplify right side
    1,637.11x = 2,013,263.30
  5. Step 5: Solve for x
    x = 2,013,263.30/1,637.11
  6. Step 6: Final answer
    x = 1,229.77

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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.