Home / 2,013.96-2,781.33-1,386.11

Finding the Fourth Proportional to 2,013.96, 2,781.33 and 1,386.11

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Solution

The fourth proportional to 2,013.96, 2,781.33 and 1,386.11 is: 1,914.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.96 : 2,781.33 = 1,386.11 : x
  2. Step 2: Convert to fraction form
    2,013.96/2,781.33 = 1,386.11/x
  3. Step 3: Cross multiply
    2,013.96x = 2,781.33 × 1,386.11
  4. Step 4: Simplify right side
    2,013.96x = 3,855,231.08
  5. Step 5: Solve for x
    x = 3,855,231.08/2,013.96
  6. Step 6: Final answer
    x = 1,914.25

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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.