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Finding the Fourth Proportional to 5,640.99, 8,455.99 and 2,355.02

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Solution

The fourth proportional to 5,640.99, 8,455.99 and 2,355.02 is: 3,530.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.99 : 8,455.99 = 2,355.02 : x
  2. Step 2: Convert to fraction form
    5,640.99/8,455.99 = 2,355.02/x
  3. Step 3: Cross multiply
    5,640.99x = 8,455.99 × 2,355.02
  4. Step 4: Simplify right side
    5,640.99x = 19,914,013.79
  5. Step 5: Solve for x
    x = 19,914,013.79/5,640.99
  6. Step 6: Final answer
    x = 3,530.24

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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.