Home / 2,485.78-3,723.99-1,253.14

Finding the Fourth Proportional to 2,485.78, 3,723.99 and 1,253.14

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Solution

The fourth proportional to 2,485.78, 3,723.99 and 1,253.14 is: 1,877.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.78 : 3,723.99 = 1,253.14 : x
  2. Step 2: Convert to fraction form
    2,485.78/3,723.99 = 1,253.14/x
  3. Step 3: Cross multiply
    2,485.78x = 3,723.99 × 1,253.14
  4. Step 4: Simplify right side
    2,485.78x = 4,666,680.83
  5. Step 5: Solve for x
    x = 4,666,680.83/2,485.78
  6. Step 6: Final answer
    x = 1,877.35

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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.