Home / 7,119.31-9,824.59-3,932.81

Finding the Fourth Proportional to 7,119.31, 9,824.59 and 3,932.81

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Solution

The fourth proportional to 7,119.31, 9,824.59 and 3,932.81 is: 5,427.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.31 : 9,824.59 = 3,932.81 : x
  2. Step 2: Convert to fraction form
    7,119.31/9,824.59 = 3,932.81/x
  3. Step 3: Cross multiply
    7,119.31x = 9,824.59 × 3,932.81
  4. Step 4: Simplify right side
    7,119.31x = 38,638,266.06
  5. Step 5: Solve for x
    x = 38,638,266.06/7,119.31
  6. Step 6: Final answer
    x = 5,427.25

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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.