Home / 5,528.31-7,629.40-3,171.21

Finding the Fourth Proportional to 5,528.31, 7,629.40 and 3,171.21

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Solution

The fourth proportional to 5,528.31, 7,629.40 and 3,171.21 is: 4,376.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,528.31 : 7,629.40 = 3,171.21 : x
  2. Step 2: Convert to fraction form
    5,528.31/7,629.40 = 3,171.21/x
  3. Step 3: Cross multiply
    5,528.31x = 7,629.40 × 3,171.21
  4. Step 4: Simplify right side
    5,528.31x = 24,194,429.57
  5. Step 5: Solve for x
    x = 24,194,429.57/5,528.31
  6. Step 6: Final answer
    x = 4,376.46

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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.