Home / 5,177.90-7,145.48-2,820.08

Finding the Fourth Proportional to 5,177.90, 7,145.48 and 2,820.08

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Solution

The fourth proportional to 5,177.90, 7,145.48 and 2,820.08 is: 3,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.90 : 7,145.48 = 2,820.08 : x
  2. Step 2: Convert to fraction form
    5,177.90/7,145.48 = 2,820.08/x
  3. Step 3: Cross multiply
    5,177.90x = 7,145.48 × 2,820.08
  4. Step 4: Simplify right side
    5,177.90x = 20,150,825.24
  5. Step 5: Solve for x
    x = 20,150,825.24/5,177.90
  6. Step 6: Final answer
    x = 3,891.70

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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.