Home / 5,278.45-7,918.69-1,580.36

Finding the Fourth Proportional to 5,278.45, 7,918.69 and 1,580.36

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Solution

The fourth proportional to 5,278.45, 7,918.69 and 1,580.36 is: 2,370.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.45 : 7,918.69 = 1,580.36 : x
  2. Step 2: Convert to fraction form
    5,278.45/7,918.69 = 1,580.36/x
  3. Step 3: Cross multiply
    5,278.45x = 7,918.69 × 1,580.36
  4. Step 4: Simplify right side
    5,278.45x = 12,514,380.93
  5. Step 5: Solve for x
    x = 12,514,380.93/5,278.45
  6. Step 6: Final answer
    x = 2,370.84

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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.