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Finding the Fourth Proportional to 6,499.40, 8,969.13 and 3,515.22

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Solution

The fourth proportional to 6,499.40, 8,969.13 and 3,515.22 is: 4,850.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,499.40 : 8,969.13 = 3,515.22 : x
  2. Step 2: Convert to fraction form
    6,499.40/8,969.13 = 3,515.22/x
  3. Step 3: Cross multiply
    6,499.40x = 8,969.13 × 3,515.22
  4. Step 4: Simplify right side
    6,499.40x = 31,528,465.16
  5. Step 5: Solve for x
    x = 31,528,465.16/6,499.40
  6. Step 6: Final answer
    x = 4,850.98

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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.