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Finding the Fourth Proportional to 6,885.81, 9,491.51 and 6,313.75

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Solution

The fourth proportional to 6,885.81, 9,491.51 and 6,313.75 is: 8,702.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885.81 : 9,491.51 = 6,313.75 : x
  2. Step 2: Convert to fraction form
    6,885.81/9,491.51 = 6,313.75/x
  3. Step 3: Cross multiply
    6,885.81x = 9,491.51 × 6,313.75
  4. Step 4: Simplify right side
    6,885.81x = 59,927,013.32
  5. Step 5: Solve for x
    x = 59,927,013.32/6,885.81
  6. Step 6: Final answer
    x = 8,702.97

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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.