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Finding the Fourth Proportional to 1,964.70, 2,947.14 and 503.82

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Solution

The fourth proportional to 1,964.70, 2,947.14 and 503.82 is: 755.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.70 : 2,947.14 = 503.82 : x
  2. Step 2: Convert to fraction form
    1,964.70/2,947.14 = 503.82/x
  3. Step 3: Cross multiply
    1,964.70x = 2,947.14 × 503.82
  4. Step 4: Simplify right side
    1,964.70x = 1,484,828.07
  5. Step 5: Solve for x
    x = 1,484,828.07/1,964.70
  6. Step 6: Final answer
    x = 755.75

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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.