Home / 7,955.07-11,931.72-2,112.13

Finding the Fourth Proportional to 7,955.07, 11,931.72 and 2,112.13

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Solution

The fourth proportional to 7,955.07, 11,931.72 and 2,112.13 is: 3,167.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.07 : 11,931.72 = 2,112.13 : x
  2. Step 2: Convert to fraction form
    7,955.07/11,931.72 = 2,112.13/x
  3. Step 3: Cross multiply
    7,955.07x = 11,931.72 × 2,112.13
  4. Step 4: Simplify right side
    7,955.07x = 25,201,343.76
  5. Step 5: Solve for x
    x = 25,201,343.76/7,955.07
  6. Step 6: Final answer
    x = 3,167.96

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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.