Home / 7,791.47-11,688.74-2,861.16

Finding the Fourth Proportional to 7,791.47, 11,688.74 and 2,861.16

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Solution

The fourth proportional to 7,791.47, 11,688.74 and 2,861.16 is: 4,292.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.47 : 11,688.74 = 2,861.16 : x
  2. Step 2: Convert to fraction form
    7,791.47/11,688.74 = 2,861.16/x
  3. Step 3: Cross multiply
    7,791.47x = 11,688.74 × 2,861.16
  4. Step 4: Simplify right side
    7,791.47x = 33,443,289.74
  5. Step 5: Solve for x
    x = 33,443,289.74/7,791.47
  6. Step 6: Final answer
    x = 4,292.30

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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.