Home / 2,847.04-3,929.16-1,728.16

Finding the Fourth Proportional to 2,847.04, 3,929.16 and 1,728.16

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Solution

The fourth proportional to 2,847.04, 3,929.16 and 1,728.16 is: 2,385.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.04 : 3,929.16 = 1,728.16 : x
  2. Step 2: Convert to fraction form
    2,847.04/3,929.16 = 1,728.16/x
  3. Step 3: Cross multiply
    2,847.04x = 3,929.16 × 1,728.16
  4. Step 4: Simplify right side
    2,847.04x = 6,790,217.15
  5. Step 5: Solve for x
    x = 6,790,217.15/2,847.04
  6. Step 6: Final answer
    x = 2,385.01

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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.