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Finding the Fourth Proportional to 2,490.77, 3,736.65 and 846.88

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Solution

The fourth proportional to 2,490.77, 3,736.65 and 846.88 is: 1,270.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.77 : 3,736.65 = 846.88 : x
  2. Step 2: Convert to fraction form
    2,490.77/3,736.65 = 846.88/x
  3. Step 3: Cross multiply
    2,490.77x = 3,736.65 × 846.88
  4. Step 4: Simplify right side
    2,490.77x = 3,164,475.47
  5. Step 5: Solve for x
    x = 3,164,475.47/2,490.77
  6. Step 6: Final answer
    x = 1,270.48

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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.