Home / 3,918.86-5,877.12-2,068.99

Finding the Fourth Proportional to 3,918.86, 5,877.12 and 2,068.99

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Solution

The fourth proportional to 3,918.86, 5,877.12 and 2,068.99 is: 3,102.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.86 : 5,877.12 = 2,068.99 : x
  2. Step 2: Convert to fraction form
    3,918.86/5,877.12 = 2,068.99/x
  3. Step 3: Cross multiply
    3,918.86x = 5,877.12 × 2,068.99
  4. Step 4: Simplify right side
    3,918.86x = 12,159,702.51
  5. Step 5: Solve for x
    x = 12,159,702.51/3,918.86
  6. Step 6: Final answer
    x = 3,102.87

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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.