Home / 3,385.56-5,078.34-1,439.40

Finding the Fourth Proportional to 3,385.56, 5,078.34 and 1,439.40

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Solution

The fourth proportional to 3,385.56, 5,078.34 and 1,439.40 is: 2,159.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385.56 : 5,078.34 = 1,439.40 : x
  2. Step 2: Convert to fraction form
    3,385.56/5,078.34 = 1,439.40/x
  3. Step 3: Cross multiply
    3,385.56x = 5,078.34 × 1,439.40
  4. Step 4: Simplify right side
    3,385.56x = 7,309,762.60
  5. Step 5: Solve for x
    x = 7,309,762.60/3,385.56
  6. Step 6: Final answer
    x = 2,159.10

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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.