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Finding the Fourth Proportional to 5,643.54, 8,465.49 and 1,945.72

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Solution

The fourth proportional to 5,643.54, 8,465.49 and 1,945.72 is: 2,918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.54 : 8,465.49 = 1,945.72 : x
  2. Step 2: Convert to fraction form
    5,643.54/8,465.49 = 1,945.72/x
  3. Step 3: Cross multiply
    5,643.54x = 8,465.49 × 1,945.72
  4. Step 4: Simplify right side
    5,643.54x = 16,471,473.20
  5. Step 5: Solve for x
    x = 16,471,473.20/5,643.54
  6. Step 6: Final answer
    x = 2,918.64

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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.