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Finding the Fourth Proportional to 8,693.99, 12,005.52 and 5,555.65

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Solution

The fourth proportional to 8,693.99, 12,005.52 and 5,555.65 is: 7,671.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.99 : 12,005.52 = 5,555.65 : x
  2. Step 2: Convert to fraction form
    8,693.99/12,005.52 = 5,555.65/x
  3. Step 3: Cross multiply
    8,693.99x = 12,005.52 × 5,555.65
  4. Step 4: Simplify right side
    8,693.99x = 66,698,467.19
  5. Step 5: Solve for x
    x = 66,698,467.19/8,693.99
  6. Step 6: Final answer
    x = 7,671.79

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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.