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Finding the Fourth Proportional to 9,007.75, 13,513.79 and 2,851.75

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Solution

The fourth proportional to 9,007.75, 13,513.79 and 2,851.75 is: 4,278.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,007.75 : 13,513.79 = 2,851.75 : x
  2. Step 2: Convert to fraction form
    9,007.75/13,513.79 = 2,851.75/x
  3. Step 3: Cross multiply
    9,007.75x = 13,513.79 × 2,851.75
  4. Step 4: Simplify right side
    9,007.75x = 38,537,950.63
  5. Step 5: Solve for x
    x = 38,537,950.63/9,007.75
  6. Step 6: Final answer
    x = 4,278.31

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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.