Home / 2,821.86-3,892.91-1,702.08

Finding the Fourth Proportional to 2,821.86, 3,892.91 and 1,702.08

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Solution

The fourth proportional to 2,821.86, 3,892.91 and 1,702.08 is: 2,348.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.86 : 3,892.91 = 1,702.08 : x
  2. Step 2: Convert to fraction form
    2,821.86/3,892.91 = 1,702.08/x
  3. Step 3: Cross multiply
    2,821.86x = 3,892.91 × 1,702.08
  4. Step 4: Simplify right side
    2,821.86x = 6,626,035.74
  5. Step 5: Solve for x
    x = 6,626,035.74/2,821.86
  6. Step 6: Final answer
    x = 2,348.11

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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.