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Finding the Fourth Proportional to 2,869.78, 3,960.17 and 1,750.54

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Solution

The fourth proportional to 2,869.78, 3,960.17 and 1,750.54 is: 2,415.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.78 : 3,960.17 = 1,750.54 : x
  2. Step 2: Convert to fraction form
    2,869.78/3,960.17 = 1,750.54/x
  3. Step 3: Cross multiply
    2,869.78x = 3,960.17 × 1,750.54
  4. Step 4: Simplify right side
    2,869.78x = 6,932,427.24
  5. Step 5: Solve for x
    x = 6,932,427.24/2,869.78
  6. Step 6: Final answer
    x = 2,415.67

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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.