Home / 7,107.30-9,808.97-4,122.50

Finding the Fourth Proportional to 7,107.30, 9,808.97 and 4,122.50

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Solution

The fourth proportional to 7,107.30, 9,808.97 and 4,122.50 is: 5,689.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.30 : 9,808.97 = 4,122.50 : x
  2. Step 2: Convert to fraction form
    7,107.30/9,808.97 = 4,122.50/x
  3. Step 3: Cross multiply
    7,107.30x = 9,808.97 × 4,122.50
  4. Step 4: Simplify right side
    7,107.30x = 40,437,409.17
  5. Step 5: Solve for x
    x = 40,437,409.17/7,107.30
  6. Step 6: Final answer
    x = 5,689.56

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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.