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Finding the Fourth Proportional to 3,783.59, 5,675.42 and 1,318.46

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Solution

The fourth proportional to 3,783.59, 5,675.42 and 1,318.46 is: 1,977.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.59 : 5,675.42 = 1,318.46 : x
  2. Step 2: Convert to fraction form
    3,783.59/5,675.42 = 1,318.46/x
  3. Step 3: Cross multiply
    3,783.59x = 5,675.42 × 1,318.46
  4. Step 4: Simplify right side
    3,783.59x = 7,482,807.66
  5. Step 5: Solve for x
    x = 7,482,807.66/3,783.59
  6. Step 6: Final answer
    x = 1,977.70

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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.