Home / 2,018.11-2,778.56-1,722.19

Finding the Fourth Proportional to 2,018.11, 2,778.56 and 1,722.19

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Solution

The fourth proportional to 2,018.11, 2,778.56 and 1,722.19 is: 2,371.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.11 : 2,778.56 = 1,722.19 : x
  2. Step 2: Convert to fraction form
    2,018.11/2,778.56 = 1,722.19/x
  3. Step 3: Cross multiply
    2,018.11x = 2,778.56 × 1,722.19
  4. Step 4: Simplify right side
    2,018.11x = 4,785,199.64
  5. Step 5: Solve for x
    x = 4,785,199.64/2,018.11
  6. Step 6: Final answer
    x = 2,371.13

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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.