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Finding the Fourth Proportional to 3,643.05, 5,465.12 and 1,177.05

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Solution

The fourth proportional to 3,643.05, 5,465.12 and 1,177.05 is: 1,765.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,643.05 : 5,465.12 = 1,177.05 : x
  2. Step 2: Convert to fraction form
    3,643.05/5,465.12 = 1,177.05/x
  3. Step 3: Cross multiply
    3,643.05x = 5,465.12 × 1,177.05
  4. Step 4: Simplify right side
    3,643.05x = 6,432,713.61
  5. Step 5: Solve for x
    x = 6,432,713.61/3,643.05
  6. Step 6: Final answer
    x = 1,765.75

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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.