Home / 5,155.50-7,729.46-1,643.48

Finding the Fourth Proportional to 5,155.50, 7,729.46 and 1,643.48

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Solution

The fourth proportional to 5,155.50, 7,729.46 and 1,643.48 is: 2,464.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.50 : 7,729.46 = 1,643.48 : x
  2. Step 2: Convert to fraction form
    5,155.50/7,729.46 = 1,643.48/x
  3. Step 3: Cross multiply
    5,155.50x = 7,729.46 × 1,643.48
  4. Step 4: Simplify right side
    5,155.50x = 12,703,212.92
  5. Step 5: Solve for x
    x = 12,703,212.92/5,155.50
  6. Step 6: Final answer
    x = 2,464.01

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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.