Home / 3,240.79-4,860.47-1,292.47

Finding the Fourth Proportional to 3,240.79, 4,860.47 and 1,292.47

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Solution

The fourth proportional to 3,240.79, 4,860.47 and 1,292.47 is: 1,938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.79 : 4,860.47 = 1,292.47 : x
  2. Step 2: Convert to fraction form
    3,240.79/4,860.47 = 1,292.47/x
  3. Step 3: Cross multiply
    3,240.79x = 4,860.47 × 1,292.47
  4. Step 4: Simplify right side
    3,240.79x = 6,282,005.20
  5. Step 5: Solve for x
    x = 6,282,005.20/3,240.79
  6. Step 6: Final answer
    x = 1,938.42

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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.