Home / 8,427.24-11,631.20-4,890.38

Finding the Fourth Proportional to 8,427.24, 11,631.20 and 4,890.38

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Solution

The fourth proportional to 8,427.24, 11,631.20 and 4,890.38 is: 6,749.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.24 : 11,631.20 = 4,890.38 : x
  2. Step 2: Convert to fraction form
    8,427.24/11,631.20 = 4,890.38/x
  3. Step 3: Cross multiply
    8,427.24x = 11,631.20 × 4,890.38
  4. Step 4: Simplify right side
    8,427.24x = 56,880,905.25
  5. Step 5: Solve for x
    x = 56,880,905.25/8,427.24
  6. Step 6: Final answer
    x = 6,749.65

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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.