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Finding the Fourth Proportional to 4,889.70, 7,318.08 and 4,485.06

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Solution

The fourth proportional to 4,889.70, 7,318.08 and 4,485.06 is: 6,712.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,889.70 : 7,318.08 = 4,485.06 : x
  2. Step 2: Convert to fraction form
    4,889.70/7,318.08 = 4,485.06/x
  3. Step 3: Cross multiply
    4,889.70x = 7,318.08 × 4,485.06
  4. Step 4: Simplify right side
    4,889.70x = 32,822,027.88
  5. Step 5: Solve for x
    x = 32,822,027.88/4,889.70
  6. Step 6: Final answer
    x = 6,712.48

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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.