Home / 3,918.15-5,878.04-1,285.83

Finding the Fourth Proportional to 3,918.15, 5,878.04 and 1,285.83

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Solution

The fourth proportional to 3,918.15, 5,878.04 and 1,285.83 is: 1,929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.15 : 5,878.04 = 1,285.83 : x
  2. Step 2: Convert to fraction form
    3,918.15/5,878.04 = 1,285.83/x
  3. Step 3: Cross multiply
    3,918.15x = 5,878.04 × 1,285.83
  4. Step 4: Simplify right side
    3,918.15x = 7,558,153.74
  5. Step 5: Solve for x
    x = 7,558,153.74/3,918.15
  6. Step 6: Final answer
    x = 1,929.01

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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.