Home / 1,039.28-1,551.70-1,028.88

Finding the Fourth Proportional to 1,039.28, 1,551.70 and 1,028.88

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Solution

The fourth proportional to 1,039.28, 1,551.70 and 1,028.88 is: 1,536.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.28 : 1,551.70 = 1,028.88 : x
  2. Step 2: Convert to fraction form
    1,039.28/1,551.70 = 1,028.88/x
  3. Step 3: Cross multiply
    1,039.28x = 1,551.70 × 1,028.88
  4. Step 4: Simplify right side
    1,039.28x = 1,596,513.10
  5. Step 5: Solve for x
    x = 1,596,513.10/1,039.28
  6. Step 6: Final answer
    x = 1,536.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.