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Finding the Fourth Proportional to 2,649.66, 3,980.64 and 1,554.80

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Solution

The fourth proportional to 2,649.66, 3,980.64 and 1,554.80 is: 2,335.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.66 : 3,980.64 = 1,554.80 : x
  2. Step 2: Convert to fraction form
    2,649.66/3,980.64 = 1,554.80/x
  3. Step 3: Cross multiply
    2,649.66x = 3,980.64 × 1,554.80
  4. Step 4: Simplify right side
    2,649.66x = 6,189,099.07
  5. Step 5: Solve for x
    x = 6,189,099.07/2,649.66
  6. Step 6: Final answer
    x = 2,335.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.