Home / 7,991.93-11,034.72-5,160.95

Finding the Fourth Proportional to 7,991.93, 11,034.72 and 5,160.95

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Solution

The fourth proportional to 7,991.93, 11,034.72 and 5,160.95 is: 7,125.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.93 : 11,034.72 = 5,160.95 : x
  2. Step 2: Convert to fraction form
    7,991.93/11,034.72 = 5,160.95/x
  3. Step 3: Cross multiply
    7,991.93x = 11,034.72 × 5,160.95
  4. Step 4: Simplify right side
    7,991.93x = 56,949,583.01
  5. Step 5: Solve for x
    x = 56,949,583.01/7,991.93
  6. Step 6: Final answer
    x = 7,125.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.