Home / 2,660.04-3,989.70-1,057.32

Finding the Fourth Proportional to 2,660.04, 3,989.70 and 1,057.32

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Solution

The fourth proportional to 2,660.04, 3,989.70 and 1,057.32 is: 1,585.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.04 : 3,989.70 = 1,057.32 : x
  2. Step 2: Convert to fraction form
    2,660.04/3,989.70 = 1,057.32/x
  3. Step 3: Cross multiply
    2,660.04x = 3,989.70 × 1,057.32
  4. Step 4: Simplify right side
    2,660.04x = 4,218,389.60
  5. Step 5: Solve for x
    x = 4,218,389.60/2,660.04
  6. Step 6: Final answer
    x = 1,585.84

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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.