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Finding the Fourth Proportional to 1,308.21, 1,950.77 and 1,126.77

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Solution

The fourth proportional to 1,308.21, 1,950.77 and 1,126.77 is: 1,680.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.21 : 1,950.77 = 1,126.77 : x
  2. Step 2: Convert to fraction form
    1,308.21/1,950.77 = 1,126.77/x
  3. Step 3: Cross multiply
    1,308.21x = 1,950.77 × 1,126.77
  4. Step 4: Simplify right side
    1,308.21x = 2,198,069.11
  5. Step 5: Solve for x
    x = 2,198,069.11/1,308.21
  6. Step 6: Final answer
    x = 1,680.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.