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Finding the Fourth Proportional to 6,487.02, 8,950.44 and 3,968.21

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Solution

The fourth proportional to 6,487.02, 8,950.44 and 3,968.21 is: 5,475.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.02 : 8,950.44 = 3,968.21 : x
  2. Step 2: Convert to fraction form
    6,487.02/8,950.44 = 3,968.21/x
  3. Step 3: Cross multiply
    6,487.02x = 8,950.44 × 3,968.21
  4. Step 4: Simplify right side
    6,487.02x = 35,517,225.51
  5. Step 5: Solve for x
    x = 35,517,225.51/6,487.02
  6. Step 6: Final answer
    x = 5,475.12

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Double scale
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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.