Home / 3,514.64-5,271.56-917.78

Finding the Fourth Proportional to 3,514.64, 5,271.56 and 917.78

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Solution

The fourth proportional to 3,514.64, 5,271.56 and 917.78 is: 1,376.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,514.64 : 5,271.56 = 917.78 : x
  2. Step 2: Convert to fraction form
    3,514.64/5,271.56 = 917.78/x
  3. Step 3: Cross multiply
    3,514.64x = 5,271.56 × 917.78
  4. Step 4: Simplify right side
    3,514.64x = 4,838,127.75
  5. Step 5: Solve for x
    x = 4,838,127.75/3,514.64
  6. Step 6: Final answer
    x = 1,376.56

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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.