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Finding the Fourth Proportional to 6,665.54, 9,987.98 and 4,687.65

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Solution

The fourth proportional to 6,665.54, 9,987.98 and 4,687.65 is: 7,024.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.54 : 9,987.98 = 4,687.65 : x
  2. Step 2: Convert to fraction form
    6,665.54/9,987.98 = 4,687.65/x
  3. Step 3: Cross multiply
    6,665.54x = 9,987.98 × 4,687.65
  4. Step 4: Simplify right side
    6,665.54x = 46,820,131.01
  5. Step 5: Solve for x
    x = 46,820,131.01/6,665.54
  6. Step 6: Final answer
    x = 7,024.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.