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Finding the Fourth Proportional to 2,491.76, 3,737.64 and 848.48

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Solution

The fourth proportional to 2,491.76, 3,737.64 and 848.48 is: 1,272.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.76 : 3,737.64 = 848.48 : x
  2. Step 2: Convert to fraction form
    2,491.76/3,737.64 = 848.48/x
  3. Step 3: Cross multiply
    2,491.76x = 3,737.64 × 848.48
  4. Step 4: Simplify right side
    2,491.76x = 3,171,312.79
  5. Step 5: Solve for x
    x = 3,171,312.79/2,491.76
  6. Step 6: Final answer
    x = 1,272.72

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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.