Home / 7,112.22-9,813.69-3,968.40

Finding the Fourth Proportional to 7,112.22, 9,813.69 and 3,968.40

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Solution

The fourth proportional to 7,112.22, 9,813.69 and 3,968.40 is: 5,475.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.22 : 9,813.69 = 3,968.40 : x
  2. Step 2: Convert to fraction form
    7,112.22/9,813.69 = 3,968.40/x
  3. Step 3: Cross multiply
    7,112.22x = 9,813.69 × 3,968.40
  4. Step 4: Simplify right side
    7,112.22x = 38,944,647.40
  5. Step 5: Solve for x
    x = 38,944,647.40/7,112.22
  6. Step 6: Final answer
    x = 5,475.74

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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.