Home / 5,177.40-7,145.10-2,938.44

Finding the Fourth Proportional to 5,177.40, 7,145.10 and 2,938.44

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Solution

The fourth proportional to 5,177.40, 7,145.10 and 2,938.44 is: 4,055.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.40 : 7,145.10 = 2,938.44 : x
  2. Step 2: Convert to fraction form
    5,177.40/7,145.10 = 2,938.44/x
  3. Step 3: Cross multiply
    5,177.40x = 7,145.10 × 2,938.44
  4. Step 4: Simplify right side
    5,177.40x = 20,995,447.64
  5. Step 5: Solve for x
    x = 20,995,447.64/5,177.40
  6. Step 6: Final answer
    x = 4,055.21

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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.