Home / 3,675.78-5,080.59-2,688.12

Finding the Fourth Proportional to 3,675.78, 5,080.59 and 2,688.12

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Solution

The fourth proportional to 3,675.78, 5,080.59 and 2,688.12 is: 3,715.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,675.78 : 5,080.59 = 2,688.12 : x
  2. Step 2: Convert to fraction form
    3,675.78/5,080.59 = 2,688.12/x
  3. Step 3: Cross multiply
    3,675.78x = 5,080.59 × 2,688.12
  4. Step 4: Simplify right side
    3,675.78x = 13,657,235.59
  5. Step 5: Solve for x
    x = 13,657,235.59/3,675.78
  6. Step 6: Final answer
    x = 3,715.47

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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.