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Finding the Fourth Proportional to 3,455.60, 4,768.74 and 1,964.01

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Solution

The fourth proportional to 3,455.60, 4,768.74 and 1,964.01 is: 2,710.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.60 : 4,768.74 = 1,964.01 : x
  2. Step 2: Convert to fraction form
    3,455.60/4,768.74 = 1,964.01/x
  3. Step 3: Cross multiply
    3,455.60x = 4,768.74 × 1,964.01
  4. Step 4: Simplify right side
    3,455.60x = 9,365,853.05
  5. Step 5: Solve for x
    x = 9,365,853.05/3,455.60
  6. Step 6: Final answer
    x = 2,710.34

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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.