Home / 2,398.80-3,309.49-1,403.52

Finding the Fourth Proportional to 2,398.80, 3,309.49 and 1,403.52

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Solution

The fourth proportional to 2,398.80, 3,309.49 and 1,403.52 is: 1,936.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,398.80 : 3,309.49 = 1,403.52 : x
  2. Step 2: Convert to fraction form
    2,398.80/3,309.49 = 1,403.52/x
  3. Step 3: Cross multiply
    2,398.80x = 3,309.49 × 1,403.52
  4. Step 4: Simplify right side
    2,398.80x = 4,644,935.40
  5. Step 5: Solve for x
    x = 4,644,935.40/2,398.80
  6. Step 6: Final answer
    x = 1,936.36

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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.