Home / 1,782.30-2,459.52-985.68

Finding the Fourth Proportional to 1,782.30, 2,459.52 and 985.68

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Solution

The fourth proportional to 1,782.30, 2,459.52 and 985.68 is: 1,360.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.30 : 2,459.52 = 985.68 : x
  2. Step 2: Convert to fraction form
    1,782.30/2,459.52 = 985.68/x
  3. Step 3: Cross multiply
    1,782.30x = 2,459.52 × 985.68
  4. Step 4: Simplify right side
    1,782.30x = 2,424,299.67
  5. Step 5: Solve for x
    x = 2,424,299.67/1,782.30
  6. Step 6: Final answer
    x = 1,360.21

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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.