Home / 7,111.36-9,813.68-3,967.44

Finding the Fourth Proportional to 7,111.36, 9,813.68 and 3,967.44

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Solution

The fourth proportional to 7,111.36, 9,813.68 and 3,967.44 is: 5,475.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.36 : 9,813.68 = 3,967.44 : x
  2. Step 2: Convert to fraction form
    7,111.36/9,813.68 = 3,967.44/x
  3. Step 3: Cross multiply
    7,111.36x = 9,813.68 × 3,967.44
  4. Step 4: Simplify right side
    7,111.36x = 38,935,186.58
  5. Step 5: Solve for x
    x = 38,935,186.58/7,111.36
  6. Step 6: Final answer
    x = 5,475.07

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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.