Home / 3,077.80-4,616.70-1,129.60

Finding the Fourth Proportional to 3,077.80, 4,616.70 and 1,129.60

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Solution

The fourth proportional to 3,077.80, 4,616.70 and 1,129.60 is: 1,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.80 : 4,616.70 = 1,129.60 : x
  2. Step 2: Convert to fraction form
    3,077.80/4,616.70 = 1,129.60/x
  3. Step 3: Cross multiply
    3,077.80x = 4,616.70 × 1,129.60
  4. Step 4: Simplify right side
    3,077.80x = 5,215,024.32
  5. Step 5: Solve for x
    x = 5,215,024.32/3,077.80
  6. Step 6: Final answer
    x = 1,694.40

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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.