Home / 2,513.80-3,770.62-1,215.40

Finding the Fourth Proportional to 2,513.80, 3,770.62 and 1,215.40

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Solution

The fourth proportional to 2,513.80, 3,770.62 and 1,215.40 is: 1,823.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,513.80 : 3,770.62 = 1,215.40 : x
  2. Step 2: Convert to fraction form
    2,513.80/3,770.62 = 1,215.40/x
  3. Step 3: Cross multiply
    2,513.80x = 3,770.62 × 1,215.40
  4. Step 4: Simplify right side
    2,513.80x = 4,582,811.55
  5. Step 5: Solve for x
    x = 4,582,811.55/2,513.80
  6. Step 6: Final answer
    x = 1,823.06

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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.