Home / 3,813.84-5,261.50-2,487.50

Finding the Fourth Proportional to 3,813.84, 5,261.50 and 2,487.50

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Solution

The fourth proportional to 3,813.84, 5,261.50 and 2,487.50 is: 3,431.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.84 : 5,261.50 = 2,487.50 : x
  2. Step 2: Convert to fraction form
    3,813.84/5,261.50 = 2,487.50/x
  3. Step 3: Cross multiply
    3,813.84x = 5,261.50 × 2,487.50
  4. Step 4: Simplify right side
    3,813.84x = 13,087,977.78
  5. Step 5: Solve for x
    x = 13,087,977.78/3,813.84
  6. Step 6: Final answer
    x = 3,431.71

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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.