Home / 7,251.12-10,005.68-4,107.20

Finding the Fourth Proportional to 7,251.12, 10,005.68 and 4,107.20

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Solution

The fourth proportional to 7,251.12, 10,005.68 and 4,107.20 is: 5,667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,251.12 : 10,005.68 = 4,107.20 : x
  2. Step 2: Convert to fraction form
    7,251.12/10,005.68 = 4,107.20/x
  3. Step 3: Cross multiply
    7,251.12x = 10,005.68 × 4,107.20
  4. Step 4: Simplify right side
    7,251.12x = 41,095,328.90
  5. Step 5: Solve for x
    x = 41,095,328.90/7,251.12
  6. Step 6: Final answer
    x = 5,667.45

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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.