Home / 3,009.17-4,149.95-1,890.21

Finding the Fourth Proportional to 3,009.17, 4,149.95 and 1,890.21

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Solution

The fourth proportional to 3,009.17, 4,149.95 and 1,890.21 is: 2,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.17 : 4,149.95 = 1,890.21 : x
  2. Step 2: Convert to fraction form
    3,009.17/4,149.95 = 1,890.21/x
  3. Step 3: Cross multiply
    3,009.17x = 4,149.95 × 1,890.21
  4. Step 4: Simplify right side
    3,009.17x = 7,844,276.99
  5. Step 5: Solve for x
    x = 7,844,276.99/3,009.17
  6. Step 6: Final answer
    x = 2,606.79

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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.