Home / 1,765.20-2,647.74-1,658.28

Finding the Fourth Proportional to 1,765.20, 2,647.74 and 1,658.28

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Solution

The fourth proportional to 1,765.20, 2,647.74 and 1,658.28 is: 2,487.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.20 : 2,647.74 = 1,658.28 : x
  2. Step 2: Convert to fraction form
    1,765.20/2,647.74 = 1,658.28/x
  3. Step 3: Cross multiply
    1,765.20x = 2,647.74 × 1,658.28
  4. Step 4: Simplify right side
    1,765.20x = 4,390,694.29
  5. Step 5: Solve for x
    x = 4,390,694.29/1,765.20
  6. Step 6: Final answer
    x = 2,487.36

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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.