Home / 7,110.90-9,812.98-3,924.23

Finding the Fourth Proportional to 7,110.90, 9,812.98 and 3,924.23

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Solution

The fourth proportional to 7,110.90, 9,812.98 and 3,924.23 is: 5,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.90 : 9,812.98 = 3,924.23 : x
  2. Step 2: Convert to fraction form
    7,110.90/9,812.98 = 3,924.23/x
  3. Step 3: Cross multiply
    7,110.90x = 9,812.98 × 3,924.23
  4. Step 4: Simplify right side
    7,110.90x = 38,508,383.14
  5. Step 5: Solve for x
    x = 38,508,383.14/7,110.90
  6. Step 6: Final answer
    x = 5,415.40

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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.