Home / 2,158.49-3,240.98-1,235.09

Finding the Fourth Proportional to 2,158.49, 3,240.98 and 1,235.09

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Solution

The fourth proportional to 2,158.49, 3,240.98 and 1,235.09 is: 1,854.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.49 : 3,240.98 = 1,235.09 : x
  2. Step 2: Convert to fraction form
    2,158.49/3,240.98 = 1,235.09/x
  3. Step 3: Cross multiply
    2,158.49x = 3,240.98 × 1,235.09
  4. Step 4: Simplify right side
    2,158.49x = 4,002,901.99
  5. Step 5: Solve for x
    x = 4,002,901.99/2,158.49
  6. Step 6: Final answer
    x = 1,854.49

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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.