Home / 5,160.06-7,120.83-2,921.93

Finding the Fourth Proportional to 5,160.06, 7,120.83 and 2,921.93

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Solution

The fourth proportional to 5,160.06, 7,120.83 and 2,921.93 is: 4,032.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.06 : 7,120.83 = 2,921.93 : x
  2. Step 2: Convert to fraction form
    5,160.06/7,120.83 = 2,921.93/x
  3. Step 3: Cross multiply
    5,160.06x = 7,120.83 × 2,921.93
  4. Step 4: Simplify right side
    5,160.06x = 20,806,552.42
  5. Step 5: Solve for x
    x = 20,806,552.42/5,160.06
  6. Step 6: Final answer
    x = 4,032.23

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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.