Home / 2,121.40-2,928.66-1,599.64

Finding the Fourth Proportional to 2,121.40, 2,928.66 and 1,599.64

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Solution

The fourth proportional to 2,121.40, 2,928.66 and 1,599.64 is: 2,208.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.40 : 2,928.66 = 1,599.64 : x
  2. Step 2: Convert to fraction form
    2,121.40/2,928.66 = 1,599.64/x
  3. Step 3: Cross multiply
    2,121.40x = 2,928.66 × 1,599.64
  4. Step 4: Simplify right side
    2,121.40x = 4,684,801.68
  5. Step 5: Solve for x
    x = 4,684,801.68/2,121.40
  6. Step 6: Final answer
    x = 2,208.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.