Home / 2,905.39-4,008.55-1,646.25

Finding the Fourth Proportional to 2,905.39, 4,008.55 and 1,646.25

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Solution

The fourth proportional to 2,905.39, 4,008.55 and 1,646.25 is: 2,271.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.39 : 4,008.55 = 1,646.25 : x
  2. Step 2: Convert to fraction form
    2,905.39/4,008.55 = 1,646.25/x
  3. Step 3: Cross multiply
    2,905.39x = 4,008.55 × 1,646.25
  4. Step 4: Simplify right side
    2,905.39x = 6,599,067.47
  5. Step 5: Solve for x
    x = 6,599,067.47/2,905.39
  6. Step 6: Final answer
    x = 2,271.32

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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.