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Finding the Fourth Proportional to 6,370.92, 8,782.02 and 5,189.94

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Solution

The fourth proportional to 6,370.92, 8,782.02 and 5,189.94 is: 7,154.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,370.92 : 8,782.02 = 5,189.94 : x
  2. Step 2: Convert to fraction form
    6,370.92/8,782.02 = 5,189.94/x
  3. Step 3: Cross multiply
    6,370.92x = 8,782.02 × 5,189.94
  4. Step 4: Simplify right side
    6,370.92x = 45,578,156.88
  5. Step 5: Solve for x
    x = 45,578,156.88/6,370.92
  6. Step 6: Final answer
    x = 7,154.09

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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.