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Finding the Fourth Proportional to 5,756.90, 7,944.55 and 3,400.20

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Solution

The fourth proportional to 5,756.90, 7,944.55 and 3,400.20 is: 4,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,756.90 : 7,944.55 = 3,400.20 : x
  2. Step 2: Convert to fraction form
    5,756.90/7,944.55 = 3,400.20/x
  3. Step 3: Cross multiply
    5,756.90x = 7,944.55 × 3,400.20
  4. Step 4: Simplify right side
    5,756.90x = 27,013,050.41
  5. Step 5: Solve for x
    x = 27,013,050.41/5,756.90
  6. Step 6: Final answer
    x = 4,692.30

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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.