Home / 3,913.78-5,868.07-2,159.63

Finding the Fourth Proportional to 3,913.78, 5,868.07 and 2,159.63

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Solution

The fourth proportional to 3,913.78, 5,868.07 and 2,159.63 is: 3,238.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.78 : 5,868.07 = 2,159.63 : x
  2. Step 2: Convert to fraction form
    3,913.78/5,868.07 = 2,159.63/x
  3. Step 3: Cross multiply
    3,913.78x = 5,868.07 × 2,159.63
  4. Step 4: Simplify right side
    3,913.78x = 12,672,849.22
  5. Step 5: Solve for x
    x = 12,672,849.22/3,913.78
  6. Step 6: Final answer
    x = 3,238.01

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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.