Home / 1,928.80-2,890.21-1,344.99

Finding the Fourth Proportional to 1,928.80, 2,890.21 and 1,344.99

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Solution

The fourth proportional to 1,928.80, 2,890.21 and 1,344.99 is: 2,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.80 : 2,890.21 = 1,344.99 : x
  2. Step 2: Convert to fraction form
    1,928.80/2,890.21 = 1,344.99/x
  3. Step 3: Cross multiply
    1,928.80x = 2,890.21 × 1,344.99
  4. Step 4: Simplify right side
    1,928.80x = 3,887,303.55
  5. Step 5: Solve for x
    x = 3,887,303.55/1,928.80
  6. Step 6: Final answer
    x = 2,015.40

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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.