Home / 6,619.50-9,136.18-3,931.32

Finding the Fourth Proportional to 6,619.50, 9,136.18 and 3,931.32

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Solution

The fourth proportional to 6,619.50, 9,136.18 and 3,931.32 is: 5,425.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.50 : 9,136.18 = 3,931.32 : x
  2. Step 2: Convert to fraction form
    6,619.50/9,136.18 = 3,931.32/x
  3. Step 3: Cross multiply
    6,619.50x = 9,136.18 × 3,931.32
  4. Step 4: Simplify right side
    6,619.50x = 35,917,247.16
  5. Step 5: Solve for x
    x = 35,917,247.16/6,619.50
  6. Step 6: Final answer
    x = 5,425.98

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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.