Home / 1,601.25-2,209.74-1,320.45

Finding the Fourth Proportional to 1,601.25, 2,209.74 and 1,320.45

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Solution

The fourth proportional to 1,601.25, 2,209.74 and 1,320.45 is: 1,822.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.25 : 2,209.74 = 1,320.45 : x
  2. Step 2: Convert to fraction form
    1,601.25/2,209.74 = 1,320.45/x
  3. Step 3: Cross multiply
    1,601.25x = 2,209.74 × 1,320.45
  4. Step 4: Simplify right side
    1,601.25x = 2,917,851.18
  5. Step 5: Solve for x
    x = 2,917,851.18/1,601.25
  6. Step 6: Final answer
    x = 1,822.23

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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.