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Finding the Fourth Proportional to 1,637.41, 2,259.65 and 891.37

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Solution

The fourth proportional to 1,637.41, 2,259.65 and 891.37 is: 1,230.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.41 : 2,259.65 = 891.37 : x
  2. Step 2: Convert to fraction form
    1,637.41/2,259.65 = 891.37/x
  3. Step 3: Cross multiply
    1,637.41x = 2,259.65 × 891.37
  4. Step 4: Simplify right side
    1,637.41x = 2,014,189.90
  5. Step 5: Solve for x
    x = 2,014,189.90/1,637.41
  6. Step 6: Final answer
    x = 1,230.11

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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.