Home / 3,440.16-5,160.04-1,978.24

Finding the Fourth Proportional to 3,440.16, 5,160.04 and 1,978.24

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Solution

The fourth proportional to 3,440.16, 5,160.04 and 1,978.24 is: 2,967.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440.16 : 5,160.04 = 1,978.24 : x
  2. Step 2: Convert to fraction form
    3,440.16/5,160.04 = 1,978.24/x
  3. Step 3: Cross multiply
    3,440.16x = 5,160.04 × 1,978.24
  4. Step 4: Simplify right side
    3,440.16x = 10,207,797.53
  5. Step 5: Solve for x
    x = 10,207,797.53/3,440.16
  6. Step 6: Final answer
    x = 2,967.24

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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.