Home / 5,142.89-7,090.74-4,197.72

Finding the Fourth Proportional to 5,142.89, 7,090.74 and 4,197.72

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Solution

The fourth proportional to 5,142.89, 7,090.74 and 4,197.72 is: 5,787.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.89 : 7,090.74 = 4,197.72 : x
  2. Step 2: Convert to fraction form
    5,142.89/7,090.74 = 4,197.72/x
  3. Step 3: Cross multiply
    5,142.89x = 7,090.74 × 4,197.72
  4. Step 4: Simplify right side
    5,142.89x = 29,764,967.70
  5. Step 5: Solve for x
    x = 29,764,967.70/5,142.89
  6. Step 6: Final answer
    x = 5,787.59

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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.