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Finding the Fourth Proportional to 7,192.10, 9,900.15 and 6,200.66

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Solution

The fourth proportional to 7,192.10, 9,900.15 and 6,200.66 is: 8,535.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,192.10 : 9,900.15 = 6,200.66 : x
  2. Step 2: Convert to fraction form
    7,192.10/9,900.15 = 6,200.66/x
  3. Step 3: Cross multiply
    7,192.10x = 9,900.15 × 6,200.66
  4. Step 4: Simplify right side
    7,192.10x = 61,387,464.10
  5. Step 5: Solve for x
    x = 61,387,464.10/7,192.10
  6. Step 6: Final answer
    x = 8,535.40

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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.