Home / 2,289.60-3,431.31-1,670.40

Finding the Fourth Proportional to 2,289.60, 3,431.31 and 1,670.40

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Solution

The fourth proportional to 2,289.60, 3,431.31 and 1,670.40 is: 2,503.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.60 : 3,431.31 = 1,670.40 : x
  2. Step 2: Convert to fraction form
    2,289.60/3,431.31 = 1,670.40/x
  3. Step 3: Cross multiply
    2,289.60x = 3,431.31 × 1,670.40
  4. Step 4: Simplify right side
    2,289.60x = 5,731,660.22
  5. Step 5: Solve for x
    x = 5,731,660.22/2,289.60
  6. Step 6: Final answer
    x = 2,503.35

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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.