Home / 3,918.45-5,875.67-1,319.49

Finding the Fourth Proportional to 3,918.45, 5,875.67 and 1,319.49

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Solution

The fourth proportional to 3,918.45, 5,875.67 and 1,319.49 is: 1,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.45 : 5,875.67 = 1,319.49 : x
  2. Step 2: Convert to fraction form
    3,918.45/5,875.67 = 1,319.49/x
  3. Step 3: Cross multiply
    3,918.45x = 5,875.67 × 1,319.49
  4. Step 4: Simplify right side
    3,918.45x = 7,752,881.21
  5. Step 5: Solve for x
    x = 7,752,881.21/3,918.45
  6. Step 6: Final answer
    x = 1,978.56

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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.