Home / 3,400.80-5,101.20-935.64

Finding the Fourth Proportional to 3,400.80, 5,101.20 and 935.64

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Solution

The fourth proportional to 3,400.80, 5,101.20 and 935.64 is: 1,403.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.80 : 5,101.20 = 935.64 : x
  2. Step 2: Convert to fraction form
    3,400.80/5,101.20 = 935.64/x
  3. Step 3: Cross multiply
    3,400.80x = 5,101.20 × 935.64
  4. Step 4: Simplify right side
    3,400.80x = 4,772,886.77
  5. Step 5: Solve for x
    x = 4,772,886.77/3,400.80
  6. Step 6: Final answer
    x = 1,403.46

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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.