Home / 1,755.12-2,628.36-1,205.40

Finding the Fourth Proportional to 1,755.12, 2,628.36 and 1,205.40

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Solution

The fourth proportional to 1,755.12, 2,628.36 and 1,205.40 is: 1,805.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.12 : 2,628.36 = 1,205.40 : x
  2. Step 2: Convert to fraction form
    1,755.12/2,628.36 = 1,205.40/x
  3. Step 3: Cross multiply
    1,755.12x = 2,628.36 × 1,205.40
  4. Step 4: Simplify right side
    1,755.12x = 3,168,225.14
  5. Step 5: Solve for x
    x = 3,168,225.14/1,755.12
  6. Step 6: Final answer
    x = 1,805.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.