Home / 3,637.28-5,019.48-1,981.28

Finding the Fourth Proportional to 3,637.28, 5,019.48 and 1,981.28

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Solution

The fourth proportional to 3,637.28, 5,019.48 and 1,981.28 is: 2,734.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,637.28 : 5,019.48 = 1,981.28 : x
  2. Step 2: Convert to fraction form
    3,637.28/5,019.48 = 1,981.28/x
  3. Step 3: Cross multiply
    3,637.28x = 5,019.48 × 1,981.28
  4. Step 4: Simplify right side
    3,637.28x = 9,944,995.33
  5. Step 5: Solve for x
    x = 9,944,995.33/3,637.28
  6. Step 6: Final answer
    x = 2,734.18

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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.