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Finding the Fourth Proportional to 6,379.66, 8,795.46 and 4,386.70

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Solution

The fourth proportional to 6,379.66, 8,795.46 and 4,386.70 is: 6,047.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.66 : 8,795.46 = 4,386.70 : x
  2. Step 2: Convert to fraction form
    6,379.66/8,795.46 = 4,386.70/x
  3. Step 3: Cross multiply
    6,379.66x = 8,795.46 × 4,386.70
  4. Step 4: Simplify right side
    6,379.66x = 38,583,044.38
  5. Step 5: Solve for x
    x = 38,583,044.38/6,379.66
  6. Step 6: Final answer
    x = 6,047.82

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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.