Home / 6,515.13-8,990.88-3,530.98

Finding the Fourth Proportional to 6,515.13, 8,990.88 and 3,530.98

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Solution

The fourth proportional to 6,515.13, 8,990.88 and 3,530.98 is: 4,872.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.13 : 8,990.88 = 3,530.98 : x
  2. Step 2: Convert to fraction form
    6,515.13/8,990.88 = 3,530.98/x
  3. Step 3: Cross multiply
    6,515.13x = 8,990.88 × 3,530.98
  4. Step 4: Simplify right side
    6,515.13x = 31,746,617.46
  5. Step 5: Solve for x
    x = 31,746,617.46/6,515.13
  6. Step 6: Final answer
    x = 4,872.75

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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.