Home / 1,253.10-1,727.63-1,028.21

Finding the Fourth Proportional to 1,253.10, 1,727.63 and 1,028.21

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Solution

The fourth proportional to 1,253.10, 1,727.63 and 1,028.21 is: 1,417.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.10 : 1,727.63 = 1,028.21 : x
  2. Step 2: Convert to fraction form
    1,253.10/1,727.63 = 1,028.21/x
  3. Step 3: Cross multiply
    1,253.10x = 1,727.63 × 1,028.21
  4. Step 4: Simplify right side
    1,253.10x = 1,776,366.24
  5. Step 5: Solve for x
    x = 1,776,366.24/1,253.10
  6. Step 6: Final answer
    x = 1,417.57

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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.