Home / 2,647.23-3,650.64-1,928.75

Finding the Fourth Proportional to 2,647.23, 3,650.64 and 1,928.75

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Solution

The fourth proportional to 2,647.23, 3,650.64 and 1,928.75 is: 2,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.23 : 3,650.64 = 1,928.75 : x
  2. Step 2: Convert to fraction form
    2,647.23/3,650.64 = 1,928.75/x
  3. Step 3: Cross multiply
    2,647.23x = 3,650.64 × 1,928.75
  4. Step 4: Simplify right side
    2,647.23x = 7,041,153.65
  5. Step 5: Solve for x
    x = 7,041,153.65/2,647.23
  6. Step 6: Final answer
    x = 2,659.82

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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.