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Finding the Fourth Proportional to 6,720.50, 10,079.12 and 2,103.50

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Solution

The fourth proportional to 6,720.50, 10,079.12 and 2,103.50 is: 3,154.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.50 : 10,079.12 = 2,103.50 : x
  2. Step 2: Convert to fraction form
    6,720.50/10,079.12 = 2,103.50/x
  3. Step 3: Cross multiply
    6,720.50x = 10,079.12 × 2,103.50
  4. Step 4: Simplify right side
    6,720.50x = 21,201,368.01
  5. Step 5: Solve for x
    x = 21,201,368.01/6,720.50
  6. Step 6: Final answer
    x = 3,154.73

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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.