Home / 3,780.79-5,214.65-2,662.05

Finding the Fourth Proportional to 3,780.79, 5,214.65 and 2,662.05

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Solution

The fourth proportional to 3,780.79, 5,214.65 and 2,662.05 is: 3,671.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.79 : 5,214.65 = 2,662.05 : x
  2. Step 2: Convert to fraction form
    3,780.79/5,214.65 = 2,662.05/x
  3. Step 3: Cross multiply
    3,780.79x = 5,214.65 × 2,662.05
  4. Step 4: Simplify right side
    3,780.79x = 13,881,659.03
  5. Step 5: Solve for x
    x = 13,881,659.03/3,780.79
  6. Step 6: Final answer
    x = 3,671.63

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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.