Home / 2,166.16-2,990.91-1,419.84

Finding the Fourth Proportional to 2,166.16, 2,990.91 and 1,419.84

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Solution

The fourth proportional to 2,166.16, 2,990.91 and 1,419.84 is: 1,960.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.16 : 2,990.91 = 1,419.84 : x
  2. Step 2: Convert to fraction form
    2,166.16/2,990.91 = 1,419.84/x
  3. Step 3: Cross multiply
    2,166.16x = 2,990.91 × 1,419.84
  4. Step 4: Simplify right side
    2,166.16x = 4,246,613.65
  5. Step 5: Solve for x
    x = 4,246,613.65/2,166.16
  6. Step 6: Final answer
    x = 1,960.43

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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.