Home / 3,109.61-4,291.25-1,712.36

Finding the Fourth Proportional to 3,109.61, 4,291.25 and 1,712.36

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Solution

The fourth proportional to 3,109.61, 4,291.25 and 1,712.36 is: 2,363.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.61 : 4,291.25 = 1,712.36 : x
  2. Step 2: Convert to fraction form
    3,109.61/4,291.25 = 1,712.36/x
  3. Step 3: Cross multiply
    3,109.61x = 4,291.25 × 1,712.36
  4. Step 4: Simplify right side
    3,109.61x = 7,348,134.83
  5. Step 5: Solve for x
    x = 7,348,134.83/3,109.61
  6. Step 6: Final answer
    x = 2,363.04

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1.5x scale

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.