Home / 2,686.03-3,702.44-2,117.95

Finding the Fourth Proportional to 2,686.03, 3,702.44 and 2,117.95

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Solution

The fourth proportional to 2,686.03, 3,702.44 and 2,117.95 is: 2,919.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.03 : 3,702.44 = 2,117.95 : x
  2. Step 2: Convert to fraction form
    2,686.03/3,702.44 = 2,117.95/x
  3. Step 3: Cross multiply
    2,686.03x = 3,702.44 × 2,117.95
  4. Step 4: Simplify right side
    2,686.03x = 7,841,553.70
  5. Step 5: Solve for x
    x = 7,841,553.70/2,686.03
  6. Step 6: Final answer
    x = 2,919.39

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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.