Home / 1,760.42-2,640.67-985.37

Finding the Fourth Proportional to 1,760.42, 2,640.67 and 985.37

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Solution

The fourth proportional to 1,760.42, 2,640.67 and 985.37 is: 1,478.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.42 : 2,640.67 = 985.37 : x
  2. Step 2: Convert to fraction form
    1,760.42/2,640.67 = 985.37/x
  3. Step 3: Cross multiply
    1,760.42x = 2,640.67 × 985.37
  4. Step 4: Simplify right side
    1,760.42x = 2,602,037.00
  5. Step 5: Solve for x
    x = 2,602,037.00/1,760.42
  6. Step 6: Final answer
    x = 1,478.08

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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.