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Finding the Fourth Proportional to 2,997.80, 4,496.67 and 776.63

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Solution

The fourth proportional to 2,997.80, 4,496.67 and 776.63 is: 1,164.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.80 : 4,496.67 = 776.63 : x
  2. Step 2: Convert to fraction form
    2,997.80/4,496.67 = 776.63/x
  3. Step 3: Cross multiply
    2,997.80x = 4,496.67 × 776.63
  4. Step 4: Simplify right side
    2,997.80x = 3,492,248.82
  5. Step 5: Solve for x
    x = 3,492,248.82/2,997.80
  6. Step 6: Final answer
    x = 1,164.94

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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.