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Finding the Fourth Proportional to 5,164.70, 7,127.80 and 2,927.17

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Solution

The fourth proportional to 5,164.70, 7,127.80 and 2,927.17 is: 4,039.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.70 : 7,127.80 = 2,927.17 : x
  2. Step 2: Convert to fraction form
    5,164.70/7,127.80 = 2,927.17/x
  3. Step 3: Cross multiply
    5,164.70x = 7,127.80 × 2,927.17
  4. Step 4: Simplify right side
    5,164.70x = 20,864,283.92
  5. Step 5: Solve for x
    x = 20,864,283.92/5,164.70
  6. Step 6: Final answer
    x = 4,039.79

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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.