Home / 3,904.80-5,396.40-2,913.36

Finding the Fourth Proportional to 3,904.80, 5,396.40 and 2,913.36

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Solution

The fourth proportional to 3,904.80, 5,396.40 and 2,913.36 is: 4,026.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.80 : 5,396.40 = 2,913.36 : x
  2. Step 2: Convert to fraction form
    3,904.80/5,396.40 = 2,913.36/x
  3. Step 3: Cross multiply
    3,904.80x = 5,396.40 × 2,913.36
  4. Step 4: Simplify right side
    3,904.80x = 15,721,655.90
  5. Step 5: Solve for x
    x = 15,721,655.90/3,904.80
  6. Step 6: Final answer
    x = 4,026.24

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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.