Home / 2,170.28-2,994.76-1,285.91

Finding the Fourth Proportional to 2,170.28, 2,994.76 and 1,285.91

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Solution

The fourth proportional to 2,170.28, 2,994.76 and 1,285.91 is: 1,774.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.28 : 2,994.76 = 1,285.91 : x
  2. Step 2: Convert to fraction form
    2,170.28/2,994.76 = 1,285.91/x
  3. Step 3: Cross multiply
    2,170.28x = 2,994.76 × 1,285.91
  4. Step 4: Simplify right side
    2,170.28x = 3,850,991.83
  5. Step 5: Solve for x
    x = 3,850,991.83/2,170.28
  6. Step 6: Final answer
    x = 1,774.42

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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.