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Finding the Fourth Proportional to 4,756.60, 7,135.01 and 1,640.20

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Solution

The fourth proportional to 4,756.60, 7,135.01 and 1,640.20 is: 2,460.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,756.60 : 7,135.01 = 1,640.20 : x
  2. Step 2: Convert to fraction form
    4,756.60/7,135.01 = 1,640.20/x
  3. Step 3: Cross multiply
    4,756.60x = 7,135.01 × 1,640.20
  4. Step 4: Simplify right side
    4,756.60x = 11,702,843.40
  5. Step 5: Solve for x
    x = 11,702,843.40/4,756.60
  6. Step 6: Final answer
    x = 2,460.34

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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.