Home / 2,151.95-3,228.10-919.37

Finding the Fourth Proportional to 2,151.95, 3,228.10 and 919.37

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Solution

The fourth proportional to 2,151.95, 3,228.10 and 919.37 is: 1,379.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.95 : 3,228.10 = 919.37 : x
  2. Step 2: Convert to fraction form
    2,151.95/3,228.10 = 919.37/x
  3. Step 3: Cross multiply
    2,151.95x = 3,228.10 × 919.37
  4. Step 4: Simplify right side
    2,151.95x = 2,967,818.30
  5. Step 5: Solve for x
    x = 2,967,818.30/2,151.95
  6. Step 6: Final answer
    x = 1,379.13

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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.