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Finding the Fourth Proportional to 6,464.70, 8,911.08 and 5,283.72

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Solution

The fourth proportional to 6,464.70, 8,911.08 and 5,283.72 is: 7,283.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,464.70 : 8,911.08 = 5,283.72 : x
  2. Step 2: Convert to fraction form
    6,464.70/8,911.08 = 5,283.72/x
  3. Step 3: Cross multiply
    6,464.70x = 8,911.08 × 5,283.72
  4. Step 4: Simplify right side
    6,464.70x = 47,083,651.62
  5. Step 5: Solve for x
    x = 47,083,651.62/6,464.70
  6. Step 6: Final answer
    x = 7,283.19

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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.