Home / 3,783.66-5,221.88-2,291.55

Finding the Fourth Proportional to 3,783.66, 5,221.88 and 2,291.55

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Solution

The fourth proportional to 3,783.66, 5,221.88 and 2,291.55 is: 3,162.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.66 : 5,221.88 = 2,291.55 : x
  2. Step 2: Convert to fraction form
    3,783.66/5,221.88 = 2,291.55/x
  3. Step 3: Cross multiply
    3,783.66x = 5,221.88 × 2,291.55
  4. Step 4: Simplify right side
    3,783.66x = 11,966,199.11
  5. Step 5: Solve for x
    x = 11,966,199.11/3,783.66
  6. Step 6: Final answer
    x = 3,162.60

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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.