Home / 1,406.03-2,106.23-1,291.21

Finding the Fourth Proportional to 1,406.03, 2,106.23 and 1,291.21

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Solution

The fourth proportional to 1,406.03, 2,106.23 and 1,291.21 is: 1,934.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,406.03 : 2,106.23 = 1,291.21 : x
  2. Step 2: Convert to fraction form
    1,406.03/2,106.23 = 1,291.21/x
  3. Step 3: Cross multiply
    1,406.03x = 2,106.23 × 1,291.21
  4. Step 4: Simplify right side
    1,406.03x = 2,719,568.25
  5. Step 5: Solve for x
    x = 2,719,568.25/1,406.03
  6. Step 6: Final answer
    x = 1,934.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.