Home / 3,770.31-5,202.45-2,155.20

Finding the Fourth Proportional to 3,770.31, 5,202.45 and 2,155.20

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Solution

The fourth proportional to 3,770.31, 5,202.45 and 2,155.20 is: 2,973.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,770.31 : 5,202.45 = 2,155.20 : x
  2. Step 2: Convert to fraction form
    3,770.31/5,202.45 = 2,155.20/x
  3. Step 3: Cross multiply
    3,770.31x = 5,202.45 × 2,155.20
  4. Step 4: Simplify right side
    3,770.31x = 11,212,312.16
  5. Step 5: Solve for x
    x = 11,212,312.16/3,770.31
  6. Step 6: Final answer
    x = 2,973.84

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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.