Home / 6,427.80-9,639.30-2,531.40

Finding the Fourth Proportional to 6,427.80, 9,639.30 and 2,531.40

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Solution

The fourth proportional to 6,427.80, 9,639.30 and 2,531.40 is: 3,796.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,427.80 : 9,639.30 = 2,531.40 : x
  2. Step 2: Convert to fraction form
    6,427.80/9,639.30 = 2,531.40/x
  3. Step 3: Cross multiply
    6,427.80x = 9,639.30 × 2,531.40
  4. Step 4: Simplify right side
    6,427.80x = 24,400,924.02
  5. Step 5: Solve for x
    x = 24,400,924.02/6,427.80
  6. Step 6: Final answer
    x = 3,796.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.