Home / 2,295.60-3,443.40-1,321.20

Finding the Fourth Proportional to 2,295.60, 3,443.40 and 1,321.20

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Solution

The fourth proportional to 2,295.60, 3,443.40 and 1,321.20 is: 1,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,295.60 : 3,443.40 = 1,321.20 : x
  2. Step 2: Convert to fraction form
    2,295.60/3,443.40 = 1,321.20/x
  3. Step 3: Cross multiply
    2,295.60x = 3,443.40 × 1,321.20
  4. Step 4: Simplify right side
    2,295.60x = 4,549,420.08
  5. Step 5: Solve for x
    x = 4,549,420.08/2,295.60
  6. Step 6: Final answer
    x = 1,981.80

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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.