Home / 5,145.72-7,097.48-3,157.24

Finding the Fourth Proportional to 5,145.72, 7,097.48 and 3,157.24

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Solution

The fourth proportional to 5,145.72, 7,097.48 and 3,157.24 is: 4,354.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.72 : 7,097.48 = 3,157.24 : x
  2. Step 2: Convert to fraction form
    5,145.72/7,097.48 = 3,157.24/x
  3. Step 3: Cross multiply
    5,145.72x = 7,097.48 × 3,157.24
  4. Step 4: Simplify right side
    5,145.72x = 22,408,447.76
  5. Step 5: Solve for x
    x = 22,408,447.76/5,145.72
  6. Step 6: Final answer
    x = 4,354.77

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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.