Home / 7,107.23-9,807.53-3,920.56

Finding the Fourth Proportional to 7,107.23, 9,807.53 and 3,920.56

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Solution

The fourth proportional to 7,107.23, 9,807.53 and 3,920.56 is: 5,410.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.23 : 9,807.53 = 3,920.56 : x
  2. Step 2: Convert to fraction form
    7,107.23/9,807.53 = 3,920.56/x
  3. Step 3: Cross multiply
    7,107.23x = 9,807.53 × 3,920.56
  4. Step 4: Simplify right side
    7,107.23x = 38,451,017.18
  5. Step 5: Solve for x
    x = 38,451,017.18/7,107.23
  6. Step 6: Final answer
    x = 5,410.13

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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.