Home / 6,885.78-10,328.66-2,989.88

Finding the Fourth Proportional to 6,885.78, 10,328.66 and 2,989.88

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Solution

The fourth proportional to 6,885.78, 10,328.66 and 2,989.88 is: 4,484.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885.78 : 10,328.66 = 2,989.88 : x
  2. Step 2: Convert to fraction form
    6,885.78/10,328.66 = 2,989.88/x
  3. Step 3: Cross multiply
    6,885.78x = 10,328.66 × 2,989.88
  4. Step 4: Simplify right side
    6,885.78x = 30,881,453.96
  5. Step 5: Solve for x
    x = 30,881,453.96/6,885.78
  6. Step 6: Final answer
    x = 4,484.82

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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.