Home / 3,980.05-5,966.96-1,787.24

Finding the Fourth Proportional to 3,980.05, 5,966.96 and 1,787.24

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Solution

The fourth proportional to 3,980.05, 5,966.96 and 1,787.24 is: 2,679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.05 : 5,966.96 = 1,787.24 : x
  2. Step 2: Convert to fraction form
    3,980.05/5,966.96 = 1,787.24/x
  3. Step 3: Cross multiply
    3,980.05x = 5,966.96 × 1,787.24
  4. Step 4: Simplify right side
    3,980.05x = 10,664,389.59
  5. Step 5: Solve for x
    x = 10,664,389.59/3,980.05
  6. Step 6: Final answer
    x = 2,679.46

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1.5x scale

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.