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Finding the Fourth Proportional to 8,347.86, 11,506.05 and 6,663.87

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Solution

The fourth proportional to 8,347.86, 11,506.05 and 6,663.87 is: 9,184.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.86 : 11,506.05 = 6,663.87 : x
  2. Step 2: Convert to fraction form
    8,347.86/11,506.05 = 6,663.87/x
  3. Step 3: Cross multiply
    8,347.86x = 11,506.05 × 6,663.87
  4. Step 4: Simplify right side
    8,347.86x = 76,674,821.41
  5. Step 5: Solve for x
    x = 76,674,821.41/8,347.86
  6. Step 6: Final answer
    x = 9,184.97

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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.