Home / 1,405.22-2,104.81-1,140.49

Finding the Fourth Proportional to 1,405.22, 2,104.81 and 1,140.49

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Solution

The fourth proportional to 1,405.22, 2,104.81 and 1,140.49 is: 1,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.22 : 2,104.81 = 1,140.49 : x
  2. Step 2: Convert to fraction form
    1,405.22/2,104.81 = 1,140.49/x
  3. Step 3: Cross multiply
    1,405.22x = 2,104.81 × 1,140.49
  4. Step 4: Simplify right side
    1,405.22x = 2,400,514.76
  5. Step 5: Solve for x
    x = 2,400,514.76/1,405.22
  6. Step 6: Final answer
    x = 1,708.28

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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.