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Finding the Fourth Proportional to 6,488.46, 8,945.87 and 4,246.79

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Solution

The fourth proportional to 6,488.46, 8,945.87 and 4,246.79 is: 5,855.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,488.46 : 8,945.87 = 4,246.79 : x
  2. Step 2: Convert to fraction form
    6,488.46/8,945.87 = 4,246.79/x
  3. Step 3: Cross multiply
    6,488.46x = 8,945.87 × 4,246.79
  4. Step 4: Simplify right side
    6,488.46x = 37,991,165.29
  5. Step 5: Solve for x
    x = 37,991,165.29/6,488.46
  6. Step 6: Final answer
    x = 5,855.19

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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.