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Finding the Fourth Proportional to 1,906.80, 2,626.20 and 1,656.24

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Solution

The fourth proportional to 1,906.80, 2,626.20 and 1,656.24 is: 2,281.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.80 : 2,626.20 = 1,656.24 : x
  2. Step 2: Convert to fraction form
    1,906.80/2,626.20 = 1,656.24/x
  3. Step 3: Cross multiply
    1,906.80x = 2,626.20 × 1,656.24
  4. Step 4: Simplify right side
    1,906.80x = 4,349,617.49
  5. Step 5: Solve for x
    x = 4,349,617.49/1,906.80
  6. Step 6: Final answer
    x = 2,281.11

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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.