Home / 2,890.95-4,332.84-1,328.73

Finding the Fourth Proportional to 2,890.95, 4,332.84 and 1,328.73

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Solution

The fourth proportional to 2,890.95, 4,332.84 and 1,328.73 is: 1,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.95 : 4,332.84 = 1,328.73 : x
  2. Step 2: Convert to fraction form
    2,890.95/4,332.84 = 1,328.73/x
  3. Step 3: Cross multiply
    2,890.95x = 4,332.84 × 1,328.73
  4. Step 4: Simplify right side
    2,890.95x = 5,757,174.49
  5. Step 5: Solve for x
    x = 5,757,174.49/2,890.95
  6. Step 6: Final answer
    x = 1,991.45

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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.