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Finding the Fourth Proportional to 8,473.91, 11,690.06 and 5,490.74

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Solution

The fourth proportional to 8,473.91, 11,690.06 and 5,490.74 is: 7,574.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,473.91 : 11,690.06 = 5,490.74 : x
  2. Step 2: Convert to fraction form
    8,473.91/11,690.06 = 5,490.74/x
  3. Step 3: Cross multiply
    8,473.91x = 11,690.06 × 5,490.74
  4. Step 4: Simplify right side
    8,473.91x = 64,187,081.82
  5. Step 5: Solve for x
    x = 64,187,081.82/8,473.91
  6. Step 6: Final answer
    x = 7,574.68

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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.