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Finding the Fourth Proportional to 8,663.65, 11,955.85 and 4,684.76

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Solution

The fourth proportional to 8,663.65, 11,955.85 and 4,684.76 is: 6,464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.65 : 11,955.85 = 4,684.76 : x
  2. Step 2: Convert to fraction form
    8,663.65/11,955.85 = 4,684.76/x
  3. Step 3: Cross multiply
    8,663.65x = 11,955.85 × 4,684.76
  4. Step 4: Simplify right side
    8,663.65x = 56,010,264.42
  5. Step 5: Solve for x
    x = 56,010,264.42/8,663.65
  6. Step 6: Final answer
    x = 6,464.97

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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.