Home / 3,664.60-5,488.80-1,931.20

Finding the Fourth Proportional to 3,664.60, 5,488.80 and 1,931.20

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Solution

The fourth proportional to 3,664.60, 5,488.80 and 1,931.20 is: 2,892.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.60 : 5,488.80 = 1,931.20 : x
  2. Step 2: Convert to fraction form
    3,664.60/5,488.80 = 1,931.20/x
  3. Step 3: Cross multiply
    3,664.60x = 5,488.80 × 1,931.20
  4. Step 4: Simplify right side
    3,664.60x = 10,599,970.56
  5. Step 5: Solve for x
    x = 10,599,970.56/3,664.60
  6. Step 6: Final answer
    x = 2,892.53

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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.