Home / 3,120.84-4,679.88-1,559.64

Finding the Fourth Proportional to 3,120.84, 4,679.88 and 1,559.64

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Solution

The fourth proportional to 3,120.84, 4,679.88 and 1,559.64 is: 2,338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.84 : 4,679.88 = 1,559.64 : x
  2. Step 2: Convert to fraction form
    3,120.84/4,679.88 = 1,559.64/x
  3. Step 3: Cross multiply
    3,120.84x = 4,679.88 × 1,559.64
  4. Step 4: Simplify right side
    3,120.84x = 7,298,928.04
  5. Step 5: Solve for x
    x = 7,298,928.04/3,120.84
  6. Step 6: Final answer
    x = 2,338.77

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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.