Home / 1,551.07-2,140.45-1,028.08

Finding the Fourth Proportional to 1,551.07, 2,140.45 and 1,028.08

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Solution

The fourth proportional to 1,551.07, 2,140.45 and 1,028.08 is: 1,418.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.07 : 2,140.45 = 1,028.08 : x
  2. Step 2: Convert to fraction form
    1,551.07/2,140.45 = 1,028.08/x
  3. Step 3: Cross multiply
    1,551.07x = 2,140.45 × 1,028.08
  4. Step 4: Simplify right side
    1,551.07x = 2,200,553.84
  5. Step 5: Solve for x
    x = 2,200,553.84/1,551.07
  6. Step 6: Final answer
    x = 1,418.73

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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.