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Finding the Fourth Proportional to 8,698.15, 12,003.45 and 4,921.24

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Solution

The fourth proportional to 8,698.15, 12,003.45 and 4,921.24 is: 6,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,698.15 : 12,003.45 = 4,921.24 : x
  2. Step 2: Convert to fraction form
    8,698.15/12,003.45 = 4,921.24/x
  3. Step 3: Cross multiply
    8,698.15x = 12,003.45 × 4,921.24
  4. Step 4: Simplify right side
    8,698.15x = 59,071,773.65
  5. Step 5: Solve for x
    x = 59,071,773.65/8,698.15
  6. Step 6: Final answer
    x = 6,791.30

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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.