Home / 5,355.40-8,042.70-3,896.20

Finding the Fourth Proportional to 5,355.40, 8,042.70 and 3,896.20

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Solution

The fourth proportional to 5,355.40, 8,042.70 and 3,896.20 is: 5,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,355.40 : 8,042.70 = 3,896.20 : x
  2. Step 2: Convert to fraction form
    5,355.40/8,042.70 = 3,896.20/x
  3. Step 3: Cross multiply
    5,355.40x = 8,042.70 × 3,896.20
  4. Step 4: Simplify right side
    5,355.40x = 31,335,967.74
  5. Step 5: Solve for x
    x = 31,335,967.74/5,355.40
  6. Step 6: Final answer
    x = 5,851.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.