Home / 2,321.33-3,478.73-1,281.80

Finding the Fourth Proportional to 2,321.33, 3,478.73 and 1,281.80

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Solution

The fourth proportional to 2,321.33, 3,478.73 and 1,281.80 is: 1,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.33 : 3,478.73 = 1,281.80 : x
  2. Step 2: Convert to fraction form
    2,321.33/3,478.73 = 1,281.80/x
  3. Step 3: Cross multiply
    2,321.33x = 3,478.73 × 1,281.80
  4. Step 4: Simplify right side
    2,321.33x = 4,459,038.40
  5. Step 5: Solve for x
    x = 4,459,038.40/2,321.33
  6. Step 6: Final answer
    x = 1,920.90

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1.5x scale

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.