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Finding the Fourth Proportional to 6,690.87, 9,230.49 and 4,036.82

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Solution

The fourth proportional to 6,690.87, 9,230.49 and 4,036.82 is: 5,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690.87 : 9,230.49 = 4,036.82 : x
  2. Step 2: Convert to fraction form
    6,690.87/9,230.49 = 4,036.82/x
  3. Step 3: Cross multiply
    6,690.87x = 9,230.49 × 4,036.82
  4. Step 4: Simplify right side
    6,690.87x = 37,261,780.49
  5. Step 5: Solve for x
    x = 37,261,780.49/6,690.87
  6. Step 6: Final answer
    x = 5,569.05

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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.