Home / 5,690.23-7,851.56-3,171.78

Finding the Fourth Proportional to 5,690.23, 7,851.56 and 3,171.78

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Solution

The fourth proportional to 5,690.23, 7,851.56 and 3,171.78 is: 4,376.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,690.23 : 7,851.56 = 3,171.78 : x
  2. Step 2: Convert to fraction form
    5,690.23/7,851.56 = 3,171.78/x
  3. Step 3: Cross multiply
    5,690.23x = 7,851.56 × 3,171.78
  4. Step 4: Simplify right side
    5,690.23x = 24,903,420.98
  5. Step 5: Solve for x
    x = 24,903,420.98/5,690.23
  6. Step 6: Final answer
    x = 4,376.52

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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.