Home / 1,637.06-2,259.13-891.05

Finding the Fourth Proportional to 1,637.06, 2,259.13 and 891.05

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Solution

The fourth proportional to 1,637.06, 2,259.13 and 891.05 is: 1,229.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.06 : 2,259.13 = 891.05 : x
  2. Step 2: Convert to fraction form
    1,637.06/2,259.13 = 891.05/x
  3. Step 3: Cross multiply
    1,637.06x = 2,259.13 × 891.05
  4. Step 4: Simplify right side
    1,637.06x = 2,012,997.79
  5. Step 5: Solve for x
    x = 2,012,997.79/1,637.06
  6. Step 6: Final answer
    x = 1,229.64

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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.