Home / 3,407.29-5,111.75-1,431.84

Finding the Fourth Proportional to 3,407.29, 5,111.75 and 1,431.84

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Solution

The fourth proportional to 3,407.29, 5,111.75 and 1,431.84 is: 2,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.29 : 5,111.75 = 1,431.84 : x
  2. Step 2: Convert to fraction form
    3,407.29/5,111.75 = 1,431.84/x
  3. Step 3: Cross multiply
    3,407.29x = 5,111.75 × 1,431.84
  4. Step 4: Simplify right side
    3,407.29x = 7,319,208.12
  5. Step 5: Solve for x
    x = 7,319,208.12/3,407.29
  6. Step 6: Final answer
    x = 2,148.10

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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.