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Finding the Fourth Proportional to 5,641.08, 8,455.08 and 2,715.36

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Solution

The fourth proportional to 5,641.08, 8,455.08 and 2,715.36 is: 4,069.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.08 : 8,455.08 = 2,715.36 : x
  2. Step 2: Convert to fraction form
    5,641.08/8,455.08 = 2,715.36/x
  3. Step 3: Cross multiply
    5,641.08x = 8,455.08 × 2,715.36
  4. Step 4: Simplify right side
    5,641.08x = 22,958,586.03
  5. Step 5: Solve for x
    x = 22,958,586.03/5,641.08
  6. Step 6: Final answer
    x = 4,069.89

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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.