Home / 2,005.13-2,767.14-1,121.19

Finding the Fourth Proportional to 2,005.13, 2,767.14 and 1,121.19

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Solution

The fourth proportional to 2,005.13, 2,767.14 and 1,121.19 is: 1,547.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.13 : 2,767.14 = 1,121.19 : x
  2. Step 2: Convert to fraction form
    2,005.13/2,767.14 = 1,121.19/x
  3. Step 3: Cross multiply
    2,005.13x = 2,767.14 × 1,121.19
  4. Step 4: Simplify right side
    2,005.13x = 3,102,489.70
  5. Step 5: Solve for x
    x = 3,102,489.70/2,005.13
  6. Step 6: Final answer
    x = 1,547.28

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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.