Home / 5,142.88-7,090.55-4,197.70

Finding the Fourth Proportional to 5,142.88, 7,090.55 and 4,197.70

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Solution

The fourth proportional to 5,142.88, 7,090.55 and 4,197.70 is: 5,787.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.88 : 7,090.55 = 4,197.70 : x
  2. Step 2: Convert to fraction form
    5,142.88/7,090.55 = 4,197.70/x
  3. Step 3: Cross multiply
    5,142.88x = 7,090.55 × 4,197.70
  4. Step 4: Simplify right side
    5,142.88x = 29,763,980.75
  5. Step 5: Solve for x
    x = 29,763,980.75/5,142.88
  6. Step 6: Final answer
    x = 5,787.41

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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.