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Finding the Fourth Proportional to 1,637.14, 2,259.27 and 891.10

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Solution

The fourth proportional to 1,637.14, 2,259.27 and 891.10 is: 1,229.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.14 : 2,259.27 = 891.10 : x
  2. Step 2: Convert to fraction form
    1,637.14/2,259.27 = 891.10/x
  3. Step 3: Cross multiply
    1,637.14x = 2,259.27 × 891.10
  4. Step 4: Simplify right side
    1,637.14x = 2,013,235.50
  5. Step 5: Solve for x
    x = 2,013,235.50/1,637.14
  6. Step 6: Final answer
    x = 1,229.73

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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.