Home / 7,122.08-10,682.31-1,927.55

Finding the Fourth Proportional to 7,122.08, 10,682.31 and 1,927.55

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Solution

The fourth proportional to 7,122.08, 10,682.31 and 1,927.55 is: 2,891.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.08 : 10,682.31 = 1,927.55 : x
  2. Step 2: Convert to fraction form
    7,122.08/10,682.31 = 1,927.55/x
  3. Step 3: Cross multiply
    7,122.08x = 10,682.31 × 1,927.55
  4. Step 4: Simplify right side
    7,122.08x = 20,590,644.22
  5. Step 5: Solve for x
    x = 20,590,644.22/7,122.08
  6. Step 6: Final answer
    x = 2,891.10

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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.