Home / 6,514.87-8,990.50-3,530.78

Finding the Fourth Proportional to 6,514.87, 8,990.50 and 3,530.78

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Solution

The fourth proportional to 6,514.87, 8,990.50 and 3,530.78 is: 4,872.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,514.87 : 8,990.50 = 3,530.78 : x
  2. Step 2: Convert to fraction form
    6,514.87/8,990.50 = 3,530.78/x
  3. Step 3: Cross multiply
    6,514.87x = 8,990.50 × 3,530.78
  4. Step 4: Simplify right side
    6,514.87x = 31,743,477.59
  5. Step 5: Solve for x
    x = 31,743,477.59/6,514.87
  6. Step 6: Final answer
    x = 4,872.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.