Home / 7,107.10-9,807.36-3,920.44

Finding the Fourth Proportional to 7,107.10, 9,807.36 and 3,920.44

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Solution

The fourth proportional to 7,107.10, 9,807.36 and 3,920.44 is: 5,409.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.10 : 9,807.36 = 3,920.44 : x
  2. Step 2: Convert to fraction form
    7,107.10/9,807.36 = 3,920.44/x
  3. Step 3: Cross multiply
    7,107.10x = 9,807.36 × 3,920.44
  4. Step 4: Simplify right side
    7,107.10x = 38,449,107.60
  5. Step 5: Solve for x
    x = 38,449,107.60/7,107.10
  6. Step 6: Final answer
    x = 5,409.96

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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.