Home / 3,909.02-5,394.44-2,140.66

Finding the Fourth Proportional to 3,909.02, 5,394.44 and 2,140.66

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Solution

The fourth proportional to 3,909.02, 5,394.44 and 2,140.66 is: 2,954.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.02 : 5,394.44 = 2,140.66 : x
  2. Step 2: Convert to fraction form
    3,909.02/5,394.44 = 2,140.66/x
  3. Step 3: Cross multiply
    3,909.02x = 5,394.44 × 2,140.66
  4. Step 4: Simplify right side
    3,909.02x = 11,547,661.93
  5. Step 5: Solve for x
    x = 11,547,661.93/3,909.02
  6. Step 6: Final answer
    x = 2,954.11

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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.