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Finding the Fourth Proportional to 3,863.76, 5,798.64 and 2,547.12

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Solution

The fourth proportional to 3,863.76, 5,798.64 and 2,547.12 is: 3,822.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.76 : 5,798.64 = 2,547.12 : x
  2. Step 2: Convert to fraction form
    3,863.76/5,798.64 = 2,547.12/x
  3. Step 3: Cross multiply
    3,863.76x = 5,798.64 × 2,547.12
  4. Step 4: Simplify right side
    3,863.76x = 14,769,831.92
  5. Step 5: Solve for x
    x = 14,769,831.92/3,863.76
  6. Step 6: Final answer
    x = 3,822.66

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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.