Home / 5,160.15-7,120.94-2,922.02

Finding the Fourth Proportional to 5,160.15, 7,120.94 and 2,922.02

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Solution

The fourth proportional to 5,160.15, 7,120.94 and 2,922.02 is: 4,032.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.15 : 7,120.94 = 2,922.02 : x
  2. Step 2: Convert to fraction form
    5,160.15/7,120.94 = 2,922.02/x
  3. Step 3: Cross multiply
    5,160.15x = 7,120.94 × 2,922.02
  4. Step 4: Simplify right side
    5,160.15x = 20,807,478.88
  5. Step 5: Solve for x
    x = 20,807,478.88/5,160.15
  6. Step 6: Final answer
    x = 4,032.34

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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.