Home / 1,661.24-2,292.52-915.16

Finding the Fourth Proportional to 1,661.24, 2,292.52 and 915.16

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Solution

The fourth proportional to 1,661.24, 2,292.52 and 915.16 is: 1,262.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.24 : 2,292.52 = 915.16 : x
  2. Step 2: Convert to fraction form
    1,661.24/2,292.52 = 915.16/x
  3. Step 3: Cross multiply
    1,661.24x = 2,292.52 × 915.16
  4. Step 4: Simplify right side
    1,661.24x = 2,098,022.60
  5. Step 5: Solve for x
    x = 2,098,022.60/1,661.24
  6. Step 6: Final answer
    x = 1,262.93

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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.