Home / 2,335.66-3,222.10-1,390.91

Finding the Fourth Proportional to 2,335.66, 3,222.10 and 1,390.91

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Solution

The fourth proportional to 2,335.66, 3,222.10 and 1,390.91 is: 1,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.66 : 3,222.10 = 1,390.91 : x
  2. Step 2: Convert to fraction form
    2,335.66/3,222.10 = 1,390.91/x
  3. Step 3: Cross multiply
    2,335.66x = 3,222.10 × 1,390.91
  4. Step 4: Simplify right side
    2,335.66x = 4,481,646.53
  5. Step 5: Solve for x
    x = 4,481,646.53/2,335.66
  6. Step 6: Final answer
    x = 1,918.80

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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.