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Finding the Fourth Proportional to 2,865.15, 3,953.07 and 1,745.46

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Solution

The fourth proportional to 2,865.15, 3,953.07 and 1,745.46 is: 2,408.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.15 : 3,953.07 = 1,745.46 : x
  2. Step 2: Convert to fraction form
    2,865.15/3,953.07 = 1,745.46/x
  3. Step 3: Cross multiply
    2,865.15x = 3,953.07 × 1,745.46
  4. Step 4: Simplify right side
    2,865.15x = 6,899,925.56
  5. Step 5: Solve for x
    x = 6,899,925.56/2,865.15
  6. Step 6: Final answer
    x = 2,408.22

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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.