Home / 3,514.24-5,271.36-917.20

Finding the Fourth Proportional to 3,514.24, 5,271.36 and 917.20

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Solution

The fourth proportional to 3,514.24, 5,271.36 and 917.20 is: 1,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,514.24 : 5,271.36 = 917.20 : x
  2. Step 2: Convert to fraction form
    3,514.24/5,271.36 = 917.20/x
  3. Step 3: Cross multiply
    3,514.24x = 5,271.36 × 917.20
  4. Step 4: Simplify right side
    3,514.24x = 4,834,891.39
  5. Step 5: Solve for x
    x = 4,834,891.39/3,514.24
  6. Step 6: Final answer
    x = 1,375.80

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1.5x scale

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.