Home / 7,147.88-10,722.29-1,953.75

Finding the Fourth Proportional to 7,147.88, 10,722.29 and 1,953.75

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Solution

The fourth proportional to 7,147.88, 10,722.29 and 1,953.75 is: 2,930.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.88 : 10,722.29 = 1,953.75 : x
  2. Step 2: Convert to fraction form
    7,147.88/10,722.29 = 1,953.75/x
  3. Step 3: Cross multiply
    7,147.88x = 10,722.29 × 1,953.75
  4. Step 4: Simplify right side
    7,147.88x = 20,948,664.32
  5. Step 5: Solve for x
    x = 20,948,664.32/7,147.88
  6. Step 6: Final answer
    x = 2,930.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.