Home / 4,642-6,405.16-3,069.28

Finding the Fourth Proportional to 4,642, 6,405.16 and 3,069.28

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Solution

The fourth proportional to 4,642, 6,405.16 and 3,069.28 is: 4,235.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,642 : 6,405.16 = 3,069.28 : x
  2. Step 2: Convert to fraction form
    4,642/6,405.16 = 3,069.28/x
  3. Step 3: Cross multiply
    4,642x = 6,405.16 × 3,069.28
  4. Step 4: Simplify right side
    4,642x = 19,659,229.48
  5. Step 5: Solve for x
    x = 19,659,229.48/4,642
  6. Step 6: Final answer
    x = 4,235.08

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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.