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Finding the Fourth Proportional to 3,666.60, 5,491.80 and 1,933.20

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Solution

The fourth proportional to 3,666.60, 5,491.80 and 1,933.20 is: 2,895.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,666.60 : 5,491.80 = 1,933.20 : x
  2. Step 2: Convert to fraction form
    3,666.60/5,491.80 = 1,933.20/x
  3. Step 3: Cross multiply
    3,666.60x = 5,491.80 × 1,933.20
  4. Step 4: Simplify right side
    3,666.60x = 10,616,747.76
  5. Step 5: Solve for x
    x = 10,616,747.76/3,666.60
  6. Step 6: Final answer
    x = 2,895.53

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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.