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Finding the Fourth Proportional to 7,210.87, 10,814.13 and 3,877.07

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Solution

The fourth proportional to 7,210.87, 10,814.13 and 3,877.07 is: 5,814.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210.87 : 10,814.13 = 3,877.07 : x
  2. Step 2: Convert to fraction form
    7,210.87/10,814.13 = 3,877.07/x
  3. Step 3: Cross multiply
    7,210.87x = 10,814.13 × 3,877.07
  4. Step 4: Simplify right side
    7,210.87x = 41,927,084.93
  5. Step 5: Solve for x
    x = 41,927,084.93/7,210.87
  6. Step 6: Final answer
    x = 5,814.43

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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.