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Finding the Fourth Proportional to 2,796.76, 3,859.54 and 1,554.76

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Solution

The fourth proportional to 2,796.76, 3,859.54 and 1,554.76 is: 2,145.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.76 : 3,859.54 = 1,554.76 : x
  2. Step 2: Convert to fraction form
    2,796.76/3,859.54 = 1,554.76/x
  3. Step 3: Cross multiply
    2,796.76x = 3,859.54 × 1,554.76
  4. Step 4: Simplify right side
    2,796.76x = 6,000,658.41
  5. Step 5: Solve for x
    x = 6,000,658.41/2,796.76
  6. Step 6: Final answer
    x = 2,145.58

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Half scale
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Double scale
Find fourth proportional to 2,797.76, 3,860.92 and 1,555.76
Similar ratio
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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.