Home / 5,434.80-8,143.56-3,485.40

Finding the Fourth Proportional to 5,434.80, 8,143.56 and 3,485.40

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Solution

The fourth proportional to 5,434.80, 8,143.56 and 3,485.40 is: 5,222.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,434.80 : 8,143.56 = 3,485.40 : x
  2. Step 2: Convert to fraction form
    5,434.80/8,143.56 = 3,485.40/x
  3. Step 3: Cross multiply
    5,434.80x = 8,143.56 × 3,485.40
  4. Step 4: Simplify right side
    5,434.80x = 28,383,564.02
  5. Step 5: Solve for x
    x = 28,383,564.02/5,434.80
  6. Step 6: Final answer
    x = 5,222.56

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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.