Home / 1,928.07-2,658.09-1,219.56

Finding the Fourth Proportional to 1,928.07, 2,658.09 and 1,219.56

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Solution

The fourth proportional to 1,928.07, 2,658.09 and 1,219.56 is: 1,681.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.07 : 2,658.09 = 1,219.56 : x
  2. Step 2: Convert to fraction form
    1,928.07/2,658.09 = 1,219.56/x
  3. Step 3: Cross multiply
    1,928.07x = 2,658.09 × 1,219.56
  4. Step 4: Simplify right side
    1,928.07x = 3,241,700.24
  5. Step 5: Solve for x
    x = 3,241,700.24/1,928.07
  6. Step 6: Final answer
    x = 1,681.32

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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.