Home / 1,782.21-2,459.70-1,285.52

Finding the Fourth Proportional to 1,782.21, 2,459.70 and 1,285.52

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Solution

The fourth proportional to 1,782.21, 2,459.70 and 1,285.52 is: 1,774.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.21 : 2,459.70 = 1,285.52 : x
  2. Step 2: Convert to fraction form
    1,782.21/2,459.70 = 1,285.52/x
  3. Step 3: Cross multiply
    1,782.21x = 2,459.70 × 1,285.52
  4. Step 4: Simplify right side
    1,782.21x = 3,161,993.54
  5. Step 5: Solve for x
    x = 3,161,993.54/1,782.21
  6. Step 6: Final answer
    x = 1,774.20

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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.