Home / 5,921.91-8,172.63-3,929.04

Finding the Fourth Proportional to 5,921.91, 8,172.63 and 3,929.04

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Solution

The fourth proportional to 5,921.91, 8,172.63 and 3,929.04 is: 5,422.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.91 : 8,172.63 = 3,929.04 : x
  2. Step 2: Convert to fraction form
    5,921.91/8,172.63 = 3,929.04/x
  3. Step 3: Cross multiply
    5,921.91x = 8,172.63 × 3,929.04
  4. Step 4: Simplify right side
    5,921.91x = 32,110,590.18
  5. Step 5: Solve for x
    x = 32,110,590.18/5,921.91
  6. Step 6: Final answer
    x = 5,422.34

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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.