Home / 3,927.90-5,420.46-2,356.88

Finding the Fourth Proportional to 3,927.90, 5,420.46 and 2,356.88

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Solution

The fourth proportional to 3,927.90, 5,420.46 and 2,356.88 is: 3,252.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.90 : 5,420.46 = 2,356.88 : x
  2. Step 2: Convert to fraction form
    3,927.90/5,420.46 = 2,356.88/x
  3. Step 3: Cross multiply
    3,927.90x = 5,420.46 × 2,356.88
  4. Step 4: Simplify right side
    3,927.90x = 12,775,373.76
  5. Step 5: Solve for x
    x = 12,775,373.76/3,927.90
  6. Step 6: Final answer
    x = 3,252.47

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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.