Home / 2,169.77-2,994.30-1,285.65

Finding the Fourth Proportional to 2,169.77, 2,994.30 and 1,285.65

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Solution

The fourth proportional to 2,169.77, 2,994.30 and 1,285.65 is: 1,774.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.77 : 2,994.30 = 1,285.65 : x
  2. Step 2: Convert to fraction form
    2,169.77/2,994.30 = 1,285.65/x
  3. Step 3: Cross multiply
    2,169.77x = 2,994.30 × 1,285.65
  4. Step 4: Simplify right side
    2,169.77x = 3,849,621.80
  5. Step 5: Solve for x
    x = 3,849,621.80/2,169.77
  6. Step 6: Final answer
    x = 1,774.21

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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.