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Finding the Fourth Proportional to 1,661.94, 2,293.38 and 953.62

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Solution

The fourth proportional to 1,661.94, 2,293.38 and 953.62 is: 1,315.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.94 : 2,293.38 = 953.62 : x
  2. Step 2: Convert to fraction form
    1,661.94/2,293.38 = 953.62/x
  3. Step 3: Cross multiply
    1,661.94x = 2,293.38 × 953.62
  4. Step 4: Simplify right side
    1,661.94x = 2,187,013.04
  5. Step 5: Solve for x
    x = 2,187,013.04/1,661.94
  6. Step 6: Final answer
    x = 1,315.94

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1.5x scale

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.