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Finding the Fourth Proportional to 5,918.77, 8,875.11 and 3,146.95

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Solution

The fourth proportional to 5,918.77, 8,875.11 and 3,146.95 is: 4,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.77 : 8,875.11 = 3,146.95 : x
  2. Step 2: Convert to fraction form
    5,918.77/8,875.11 = 3,146.95/x
  3. Step 3: Cross multiply
    5,918.77x = 8,875.11 × 3,146.95
  4. Step 4: Simplify right side
    5,918.77x = 27,929,483.04
  5. Step 5: Solve for x
    x = 27,929,483.04/5,918.77
  6. Step 6: Final answer
    x = 4,718.80

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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.