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Finding the Fourth Proportional to 1,800.54, 2,479.77 and 1,551.78

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Solution

The fourth proportional to 1,800.54, 2,479.77 and 1,551.78 is: 2,137.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.54 : 2,479.77 = 1,551.78 : x
  2. Step 2: Convert to fraction form
    1,800.54/2,479.77 = 1,551.78/x
  3. Step 3: Cross multiply
    1,800.54x = 2,479.77 × 1,551.78
  4. Step 4: Simplify right side
    1,800.54x = 3,848,057.49
  5. Step 5: Solve for x
    x = 3,848,057.49/1,800.54
  6. Step 6: Final answer
    x = 2,137.17

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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.