Home / 7,971.71-11,016.13-5,978.81

Finding the Fourth Proportional to 7,971.71, 11,016.13 and 5,978.81

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Solution

The fourth proportional to 7,971.71, 11,016.13 and 5,978.81 is: 8,262.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.71 : 11,016.13 = 5,978.81 : x
  2. Step 2: Convert to fraction form
    7,971.71/11,016.13 = 5,978.81/x
  3. Step 3: Cross multiply
    7,971.71x = 11,016.13 × 5,978.81
  4. Step 4: Simplify right side
    7,971.71x = 65,863,347.22
  5. Step 5: Solve for x
    x = 65,863,347.22/7,971.71
  6. Step 6: Final answer
    x = 8,262.13

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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.