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Finding the Fourth Proportional to 2,605.14, 3,907.73 and 657.34

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Solution

The fourth proportional to 2,605.14, 3,907.73 and 657.34 is: 986.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.14 : 3,907.73 = 657.34 : x
  2. Step 2: Convert to fraction form
    2,605.14/3,907.73 = 657.34/x
  3. Step 3: Cross multiply
    2,605.14x = 3,907.73 × 657.34
  4. Step 4: Simplify right side
    2,605.14x = 2,568,699.11
  5. Step 5: Solve for x
    x = 2,568,699.11/2,605.14
  6. Step 6: Final answer
    x = 986.01

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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.