Home / 3,205.40-4,808.24-1,125.60

Finding the Fourth Proportional to 3,205.40, 4,808.24 and 1,125.60

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Solution

The fourth proportional to 3,205.40, 4,808.24 and 1,125.60 is: 1,688.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.40 : 4,808.24 = 1,125.60 : x
  2. Step 2: Convert to fraction form
    3,205.40/4,808.24 = 1,125.60/x
  3. Step 3: Cross multiply
    3,205.40x = 4,808.24 × 1,125.60
  4. Step 4: Simplify right side
    3,205.40x = 5,412,154.94
  5. Step 5: Solve for x
    x = 5,412,154.94/3,205.40
  6. Step 6: Final answer
    x = 1,688.45

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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.