Home / 3,929.42-5,420.34-2,356.60

Finding the Fourth Proportional to 3,929.42, 5,420.34 and 2,356.60

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Solution

The fourth proportional to 3,929.42, 5,420.34 and 2,356.60 is: 3,250.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.42 : 5,420.34 = 2,356.60 : x
  2. Step 2: Convert to fraction form
    3,929.42/5,420.34 = 2,356.60/x
  3. Step 3: Cross multiply
    3,929.42x = 5,420.34 × 2,356.60
  4. Step 4: Simplify right side
    3,929.42x = 12,773,573.24
  5. Step 5: Solve for x
    x = 12,773,573.24/3,929.42
  6. Step 6: Final answer
    x = 3,250.75

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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.