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Finding the Fourth Proportional to 6,482.15, 8,945.40 and 3,687.65

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Solution

The fourth proportional to 6,482.15, 8,945.40 and 3,687.65 is: 5,088.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,482.15 : 8,945.40 = 3,687.65 : x
  2. Step 2: Convert to fraction form
    6,482.15/8,945.40 = 3,687.65/x
  3. Step 3: Cross multiply
    6,482.15x = 8,945.40 × 3,687.65
  4. Step 4: Simplify right side
    6,482.15x = 32,987,504.31
  5. Step 5: Solve for x
    x = 32,987,504.31/6,482.15
  6. Step 6: Final answer
    x = 5,088.98

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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.