Home / 2,971.60-4,453.80-1,326.40

Finding the Fourth Proportional to 2,971.60, 4,453.80 and 1,326.40

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Solution

The fourth proportional to 2,971.60, 4,453.80 and 1,326.40 is: 1,987.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.60 : 4,453.80 = 1,326.40 : x
  2. Step 2: Convert to fraction form
    2,971.60/4,453.80 = 1,326.40/x
  3. Step 3: Cross multiply
    2,971.60x = 4,453.80 × 1,326.40
  4. Step 4: Simplify right side
    2,971.60x = 5,907,520.32
  5. Step 5: Solve for x
    x = 5,907,520.32/2,971.60
  6. Step 6: Final answer
    x = 1,987.99

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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.