Home / 3,992.60-5,510.76-2,875.88

Finding the Fourth Proportional to 3,992.60, 5,510.76 and 2,875.88

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Solution

The fourth proportional to 3,992.60, 5,510.76 and 2,875.88 is: 3,969.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.60 : 5,510.76 = 2,875.88 : x
  2. Step 2: Convert to fraction form
    3,992.60/5,510.76 = 2,875.88/x
  3. Step 3: Cross multiply
    3,992.60x = 5,510.76 × 2,875.88
  4. Step 4: Simplify right side
    3,992.60x = 15,848,284.47
  5. Step 5: Solve for x
    x = 15,848,284.47/3,992.60
  6. Step 6: Final answer
    x = 3,969.41

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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.