Home / 1,646.08-2,272.38-1,115.26

Finding the Fourth Proportional to 1,646.08, 2,272.38 and 1,115.26

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Solution

The fourth proportional to 1,646.08, 2,272.38 and 1,115.26 is: 1,539.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.08 : 2,272.38 = 1,115.26 : x
  2. Step 2: Convert to fraction form
    1,646.08/2,272.38 = 1,115.26/x
  3. Step 3: Cross multiply
    1,646.08x = 2,272.38 × 1,115.26
  4. Step 4: Simplify right side
    1,646.08x = 2,534,294.52
  5. Step 5: Solve for x
    x = 2,534,294.52/1,646.08
  6. Step 6: Final answer
    x = 1,539.59

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Half scale
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Double scale
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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.