Home / 3,918.60-5,877.90-1,145.16

Finding the Fourth Proportional to 3,918.60, 5,877.90 and 1,145.16

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Solution

The fourth proportional to 3,918.60, 5,877.90 and 1,145.16 is: 1,717.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.60 : 5,877.90 = 1,145.16 : x
  2. Step 2: Convert to fraction form
    3,918.60/5,877.90 = 1,145.16/x
  3. Step 3: Cross multiply
    3,918.60x = 5,877.90 × 1,145.16
  4. Step 4: Simplify right side
    3,918.60x = 6,731,135.96
  5. Step 5: Solve for x
    x = 6,731,135.96/3,918.60
  6. Step 6: Final answer
    x = 1,717.74

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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.