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Finding the Fourth Proportional to 6,885.92, 10,326.72 and 2,989.28

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Solution

The fourth proportional to 6,885.92, 10,326.72 and 2,989.28 is: 4,482.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885.92 : 10,326.72 = 2,989.28 : x
  2. Step 2: Convert to fraction form
    6,885.92/10,326.72 = 2,989.28/x
  3. Step 3: Cross multiply
    6,885.92x = 10,326.72 × 2,989.28
  4. Step 4: Simplify right side
    6,885.92x = 30,869,457.56
  5. Step 5: Solve for x
    x = 30,869,457.56/6,885.92
  6. Step 6: Final answer
    x = 4,482.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.