Home / 2,012.24-2,777.64-1,392.08

Finding the Fourth Proportional to 2,012.24, 2,777.64 and 1,392.08

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Solution

The fourth proportional to 2,012.24, 2,777.64 and 1,392.08 is: 1,921.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.24 : 2,777.64 = 1,392.08 : x
  2. Step 2: Convert to fraction form
    2,012.24/2,777.64 = 1,392.08/x
  3. Step 3: Cross multiply
    2,012.24x = 2,777.64 × 1,392.08
  4. Step 4: Simplify right side
    2,012.24x = 3,866,697.09
  5. Step 5: Solve for x
    x = 3,866,697.09/2,012.24
  6. Step 6: Final answer
    x = 1,921.59

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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.