Home / 6,631.40-9,150.90-3,647.12

Finding the Fourth Proportional to 6,631.40, 9,150.90 and 3,647.12

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Solution

The fourth proportional to 6,631.40, 9,150.90 and 3,647.12 is: 5,032.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,631.40 : 9,150.90 = 3,647.12 : x
  2. Step 2: Convert to fraction form
    6,631.40/9,150.90 = 3,647.12/x
  3. Step 3: Cross multiply
    6,631.40x = 9,150.90 × 3,647.12
  4. Step 4: Simplify right side
    6,631.40x = 33,374,430.41
  5. Step 5: Solve for x
    x = 33,374,430.41/6,631.40
  6. Step 6: Final answer
    x = 5,032.79

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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.