Home / 2,420.32-3,631.88-1,310.56

Finding the Fourth Proportional to 2,420.32, 3,631.88 and 1,310.56

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Solution

The fourth proportional to 2,420.32, 3,631.88 and 1,310.56 is: 1,966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.32 : 3,631.88 = 1,310.56 : x
  2. Step 2: Convert to fraction form
    2,420.32/3,631.88 = 1,310.56/x
  3. Step 3: Cross multiply
    2,420.32x = 3,631.88 × 1,310.56
  4. Step 4: Simplify right side
    2,420.32x = 4,759,796.65
  5. Step 5: Solve for x
    x = 4,759,796.65/2,420.32
  6. Step 6: Final answer
    x = 1,966.60

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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.