Home / 2,045.49-2,821.26-1,298.80

Finding the Fourth Proportional to 2,045.49, 2,821.26 and 1,298.80

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Solution

The fourth proportional to 2,045.49, 2,821.26 and 1,298.80 is: 1,791.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,045.49 : 2,821.26 = 1,298.80 : x
  2. Step 2: Convert to fraction form
    2,045.49/2,821.26 = 1,298.80/x
  3. Step 3: Cross multiply
    2,045.49x = 2,821.26 × 1,298.80
  4. Step 4: Simplify right side
    2,045.49x = 3,664,252.49
  5. Step 5: Solve for x
    x = 3,664,252.49/2,045.49
  6. Step 6: Final answer
    x = 1,791.38

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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.