Home / 3,394.31-5,089.94-1,312.71

Finding the Fourth Proportional to 3,394.31, 5,089.94 and 1,312.71

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Solution

The fourth proportional to 3,394.31, 5,089.94 and 1,312.71 is: 1,968.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394.31 : 5,089.94 = 1,312.71 : x
  2. Step 2: Convert to fraction form
    3,394.31/5,089.94 = 1,312.71/x
  3. Step 3: Cross multiply
    3,394.31x = 5,089.94 × 1,312.71
  4. Step 4: Simplify right side
    3,394.31x = 6,681,594.41
  5. Step 5: Solve for x
    x = 6,681,594.41/3,394.31
  6. Step 6: Final answer
    x = 1,968.47

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1.5x scale

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.