Home / 1,782.03-2,459.14-985.31

Finding the Fourth Proportional to 1,782.03, 2,459.14 and 985.31

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Solution

The fourth proportional to 1,782.03, 2,459.14 and 985.31 is: 1,359.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.03 : 2,459.14 = 985.31 : x
  2. Step 2: Convert to fraction form
    1,782.03/2,459.14 = 985.31/x
  3. Step 3: Cross multiply
    1,782.03x = 2,459.14 × 985.31
  4. Step 4: Simplify right side
    1,782.03x = 2,423,002.94
  5. Step 5: Solve for x
    x = 2,423,002.94/1,782.03
  6. Step 6: Final answer
    x = 1,359.69

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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.