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Finding the Fourth Proportional to 2,235.78, 3,353.75 and 675.80

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Solution

The fourth proportional to 2,235.78, 3,353.75 and 675.80 is: 1,013.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,235.78 : 3,353.75 = 675.80 : x
  2. Step 2: Convert to fraction form
    2,235.78/3,353.75 = 675.80/x
  3. Step 3: Cross multiply
    2,235.78x = 3,353.75 × 675.80
  4. Step 4: Simplify right side
    2,235.78x = 2,266,444.10
  5. Step 5: Solve for x
    x = 2,266,444.10/2,235.78
  6. Step 6: Final answer
    x = 1,013.72

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1.5x scale

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.