Home / 3,079.60-4,618.74-1,230.40

Finding the Fourth Proportional to 3,079.60, 4,618.74 and 1,230.40

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Solution

The fourth proportional to 3,079.60, 4,618.74 and 1,230.40 is: 1,845.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.60 : 4,618.74 = 1,230.40 : x
  2. Step 2: Convert to fraction form
    3,079.60/4,618.74 = 1,230.40/x
  3. Step 3: Cross multiply
    3,079.60x = 4,618.74 × 1,230.40
  4. Step 4: Simplify right side
    3,079.60x = 5,682,897.70
  5. Step 5: Solve for x
    x = 5,682,897.70/3,079.60
  6. Step 6: Final answer
    x = 1,845.34

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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.