Home / 2,069.90-2,856.44-1,125.72

Finding the Fourth Proportional to 2,069.90, 2,856.44 and 1,125.72

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Solution

The fourth proportional to 2,069.90, 2,856.44 and 1,125.72 is: 1,553.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,069.90 : 2,856.44 = 1,125.72 : x
  2. Step 2: Convert to fraction form
    2,069.90/2,856.44 = 1,125.72/x
  3. Step 3: Cross multiply
    2,069.90x = 2,856.44 × 1,125.72
  4. Step 4: Simplify right side
    2,069.90x = 3,215,551.64
  5. Step 5: Solve for x
    x = 3,215,551.64/2,069.90
  6. Step 6: Final answer
    x = 1,553.48

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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.