Home / 6,515.17-8,990.90-3,530.98

Finding the Fourth Proportional to 6,515.17, 8,990.90 and 3,530.98

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Solution

The fourth proportional to 6,515.17, 8,990.90 and 3,530.98 is: 4,872.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.17 : 8,990.90 = 3,530.98 : x
  2. Step 2: Convert to fraction form
    6,515.17/8,990.90 = 3,530.98/x
  3. Step 3: Cross multiply
    6,515.17x = 8,990.90 × 3,530.98
  4. Step 4: Simplify right side
    6,515.17x = 31,746,651.95
  5. Step 5: Solve for x
    x = 31,746,651.95/6,515.17
  6. Step 6: Final answer
    x = 4,872.73

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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.