Home / 5,177.60-7,145.72-2,940.18

Finding the Fourth Proportional to 5,177.60, 7,145.72 and 2,940.18

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Solution

The fourth proportional to 5,177.60, 7,145.72 and 2,940.18 is: 4,057.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.60 : 7,145.72 = 2,940.18 : x
  2. Step 2: Convert to fraction form
    5,177.60/7,145.72 = 2,940.18/x
  3. Step 3: Cross multiply
    5,177.60x = 7,145.72 × 2,940.18
  4. Step 4: Simplify right side
    5,177.60x = 21,009,703.03
  5. Step 5: Solve for x
    x = 21,009,703.03/5,177.60
  6. Step 6: Final answer
    x = 4,057.81

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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.