Home / 1,646.19-2,270.43-1,398.33

Finding the Fourth Proportional to 1,646.19, 2,270.43 and 1,398.33

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Solution

The fourth proportional to 1,646.19, 2,270.43 and 1,398.33 is: 1,928.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.19 : 2,270.43 = 1,398.33 : x
  2. Step 2: Convert to fraction form
    1,646.19/2,270.43 = 1,398.33/x
  3. Step 3: Cross multiply
    1,646.19x = 2,270.43 × 1,398.33
  4. Step 4: Simplify right side
    1,646.19x = 3,174,810.38
  5. Step 5: Solve for x
    x = 3,174,810.38/1,646.19
  6. Step 6: Final answer
    x = 1,928.58

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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.