Home / 2,069.49-2,855.90-1,125.28

Finding the Fourth Proportional to 2,069.49, 2,855.90 and 1,125.28

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Solution

The fourth proportional to 2,069.49, 2,855.90 and 1,125.28 is: 1,552.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,069.49 : 2,855.90 = 1,125.28 : x
  2. Step 2: Convert to fraction form
    2,069.49/2,855.90 = 1,125.28/x
  3. Step 3: Cross multiply
    2,069.49x = 2,855.90 × 1,125.28
  4. Step 4: Simplify right side
    2,069.49x = 3,213,687.15
  5. Step 5: Solve for x
    x = 3,213,687.15/2,069.49
  6. Step 6: Final answer
    x = 1,552.89

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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.