Home / 1,805.48-2,489.30-1,175.12

Finding the Fourth Proportional to 1,805.48, 2,489.30 and 1,175.12

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Solution

The fourth proportional to 1,805.48, 2,489.30 and 1,175.12 is: 1,620.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.48 : 2,489.30 = 1,175.12 : x
  2. Step 2: Convert to fraction form
    1,805.48/2,489.30 = 1,175.12/x
  3. Step 3: Cross multiply
    1,805.48x = 2,489.30 × 1,175.12
  4. Step 4: Simplify right side
    1,805.48x = 2,925,226.22
  5. Step 5: Solve for x
    x = 2,925,226.22/1,805.48
  6. Step 6: Final answer
    x = 1,620.19

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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.