Home / 2,261.07-3,119.58-1,266.21

Finding the Fourth Proportional to 2,261.07, 3,119.58 and 1,266.21

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Solution

The fourth proportional to 2,261.07, 3,119.58 and 1,266.21 is: 1,746.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.07 : 3,119.58 = 1,266.21 : x
  2. Step 2: Convert to fraction form
    2,261.07/3,119.58 = 1,266.21/x
  3. Step 3: Cross multiply
    2,261.07x = 3,119.58 × 1,266.21
  4. Step 4: Simplify right side
    2,261.07x = 3,950,043.39
  5. Step 5: Solve for x
    x = 3,950,043.39/2,261.07
  6. Step 6: Final answer
    x = 1,746.98

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Half scale
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Double scale
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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.