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Finding the Fourth Proportional to 7,681.87, 11,526.56 and 2,751.89

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Solution

The fourth proportional to 7,681.87, 11,526.56 and 2,751.89 is: 4,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.87 : 11,526.56 = 2,751.89 : x
  2. Step 2: Convert to fraction form
    7,681.87/11,526.56 = 2,751.89/x
  3. Step 3: Cross multiply
    7,681.87x = 11,526.56 × 2,751.89
  4. Step 4: Simplify right side
    7,681.87x = 31,719,774.45
  5. Step 5: Solve for x
    x = 31,719,774.45/7,681.87
  6. Step 6: Final answer
    x = 4,129.18

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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.