Home / 2,875.68-3,983.46-2,817.36

Finding the Fourth Proportional to 2,875.68, 3,983.46 and 2,817.36

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Solution

The fourth proportional to 2,875.68, 3,983.46 and 2,817.36 is: 3,902.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.68 : 3,983.46 = 2,817.36 : x
  2. Step 2: Convert to fraction form
    2,875.68/3,983.46 = 2,817.36/x
  3. Step 3: Cross multiply
    2,875.68x = 3,983.46 × 2,817.36
  4. Step 4: Simplify right side
    2,875.68x = 11,222,840.87
  5. Step 5: Solve for x
    x = 11,222,840.87/2,875.68
  6. Step 6: Final answer
    x = 3,902.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.