Home / 1,931.64-2,890.80-1,314.60

Finding the Fourth Proportional to 1,931.64, 2,890.80 and 1,314.60

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Solution

The fourth proportional to 1,931.64, 2,890.80 and 1,314.60 is: 1,967.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.64 : 2,890.80 = 1,314.60 : x
  2. Step 2: Convert to fraction form
    1,931.64/2,890.80 = 1,314.60/x
  3. Step 3: Cross multiply
    1,931.64x = 2,890.80 × 1,314.60
  4. Step 4: Simplify right side
    1,931.64x = 3,800,245.68
  5. Step 5: Solve for x
    x = 3,800,245.68/1,931.64
  6. Step 6: Final answer
    x = 1,967.37

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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.