Home / 4,920.05-6,792.13-3,129.33

Finding the Fourth Proportional to 4,920.05, 6,792.13 and 3,129.33

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Solution

The fourth proportional to 4,920.05, 6,792.13 and 3,129.33 is: 4,320.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.05 : 6,792.13 = 3,129.33 : x
  2. Step 2: Convert to fraction form
    4,920.05/6,792.13 = 3,129.33/x
  3. Step 3: Cross multiply
    4,920.05x = 6,792.13 × 3,129.33
  4. Step 4: Simplify right side
    4,920.05x = 21,254,816.17
  5. Step 5: Solve for x
    x = 21,254,816.17/4,920.05
  6. Step 6: Final answer
    x = 4,320.04

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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.