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Finding the Fourth Proportional to 8,470.84, 11,688.65 and 4,693.82

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Solution

The fourth proportional to 8,470.84, 11,688.65 and 4,693.82 is: 6,476.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.84 : 11,688.65 = 4,693.82 : x
  2. Step 2: Convert to fraction form
    8,470.84/11,688.65 = 4,693.82/x
  3. Step 3: Cross multiply
    8,470.84x = 11,688.65 × 4,693.82
  4. Step 4: Simplify right side
    8,470.84x = 54,864,479.86
  5. Step 5: Solve for x
    x = 54,864,479.86/8,470.84
  6. Step 6: Final answer
    x = 6,476.86

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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.