Home / 7,163.10-10,720.35-6,288.30

Finding the Fourth Proportional to 7,163.10, 10,720.35 and 6,288.30

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Solution

The fourth proportional to 7,163.10, 10,720.35 and 6,288.30 is: 9,411.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163.10 : 10,720.35 = 6,288.30 : x
  2. Step 2: Convert to fraction form
    7,163.10/10,720.35 = 6,288.30/x
  3. Step 3: Cross multiply
    7,163.10x = 10,720.35 × 6,288.30
  4. Step 4: Simplify right side
    7,163.10x = 67,412,776.91
  5. Step 5: Solve for x
    x = 67,412,776.91/7,163.10
  6. Step 6: Final answer
    x = 9,411.12

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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.