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Finding the Fourth Proportional to 3,400.07, 4,692.13 and 1,907.89

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Solution

The fourth proportional to 3,400.07, 4,692.13 and 1,907.89 is: 2,632.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.07 : 4,692.13 = 1,907.89 : x
  2. Step 2: Convert to fraction form
    3,400.07/4,692.13 = 1,907.89/x
  3. Step 3: Cross multiply
    3,400.07x = 4,692.13 × 1,907.89
  4. Step 4: Simplify right side
    3,400.07x = 8,952,051.41
  5. Step 5: Solve for x
    x = 8,952,051.41/3,400.07
  6. Step 6: Final answer
    x = 2,632.91

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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.