Home / 3,077.85-4,247.37-1,680.60

Finding the Fourth Proportional to 3,077.85, 4,247.37 and 1,680.60

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Solution

The fourth proportional to 3,077.85, 4,247.37 and 1,680.60 is: 2,319.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.85 : 4,247.37 = 1,680.60 : x
  2. Step 2: Convert to fraction form
    3,077.85/4,247.37 = 1,680.60/x
  3. Step 3: Cross multiply
    3,077.85x = 4,247.37 × 1,680.60
  4. Step 4: Simplify right side
    3,077.85x = 7,138,130.02
  5. Step 5: Solve for x
    x = 7,138,130.02/3,077.85
  6. Step 6: Final answer
    x = 2,319.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.