Home / 10,198.78-14,074.74-5,722.40

Finding the Fourth Proportional to 10,198.78, 14,074.74 and 5,722.40

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Solution

The fourth proportional to 10,198.78, 14,074.74 and 5,722.40 is: 7,897.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,198.78 : 14,074.74 = 5,722.40 : x
  2. Step 2: Convert to fraction form
    10,198.78/14,074.74 = 5,722.40/x
  3. Step 3: Cross multiply
    10,198.78x = 14,074.74 × 5,722.40
  4. Step 4: Simplify right side
    10,198.78x = 80,541,292.18
  5. Step 5: Solve for x
    x = 80,541,292.18/10,198.78
  6. Step 6: Final answer
    x = 7,897.15

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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.