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Finding the Fourth Proportional to 4,539.70, 6,809.55 and 4,270.90

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Solution

The fourth proportional to 4,539.70, 6,809.55 and 4,270.90 is: 6,406.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,539.70 : 6,809.55 = 4,270.90 : x
  2. Step 2: Convert to fraction form
    4,539.70/6,809.55 = 4,270.90/x
  3. Step 3: Cross multiply
    4,539.70x = 6,809.55 × 4,270.90
  4. Step 4: Simplify right side
    4,539.70x = 29,082,907.10
  5. Step 5: Solve for x
    x = 29,082,907.10/4,539.70
  6. Step 6: Final answer
    x = 6,406.35

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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.