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Finding the Fourth Proportional to 1,702.86, 2,356.70 and 1,661.96

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Solution

The fourth proportional to 1,702.86, 2,356.70 and 1,661.96 is: 2,300.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,702.86 : 2,356.70 = 1,661.96 : x
  2. Step 2: Convert to fraction form
    1,702.86/2,356.70 = 1,661.96/x
  3. Step 3: Cross multiply
    1,702.86x = 2,356.70 × 1,661.96
  4. Step 4: Simplify right side
    1,702.86x = 3,916,721.04
  5. Step 5: Solve for x
    x = 3,916,721.04/1,702.86
  6. Step 6: Final answer
    x = 2,300.08

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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.