Home / 2,120.25-2,924.61-1,411.87

Finding the Fourth Proportional to 2,120.25, 2,924.61 and 1,411.87

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Solution

The fourth proportional to 2,120.25, 2,924.61 and 1,411.87 is: 1,947.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.25 : 2,924.61 = 1,411.87 : x
  2. Step 2: Convert to fraction form
    2,120.25/2,924.61 = 1,411.87/x
  3. Step 3: Cross multiply
    2,120.25x = 2,924.61 × 1,411.87
  4. Step 4: Simplify right side
    2,120.25x = 4,129,169.12
  5. Step 5: Solve for x
    x = 4,129,169.12/2,120.25
  6. Step 6: Final answer
    x = 1,947.49

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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.