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Finding the Fourth Proportional to 3,907.79, 5,858.95 and 1,958.93

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Solution

The fourth proportional to 3,907.79, 5,858.95 and 1,958.93 is: 2,937.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.79 : 5,858.95 = 1,958.93 : x
  2. Step 2: Convert to fraction form
    3,907.79/5,858.95 = 1,958.93/x
  3. Step 3: Cross multiply
    3,907.79x = 5,858.95 × 1,958.93
  4. Step 4: Simplify right side
    3,907.79x = 11,477,264.38
  5. Step 5: Solve for x
    x = 11,477,264.38/3,907.79
  6. Step 6: Final answer
    x = 2,937.02

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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.