Home / 1,674.91-2,311.32-928.94

Finding the Fourth Proportional to 1,674.91, 2,311.32 and 928.94

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Solution

The fourth proportional to 1,674.91, 2,311.32 and 928.94 is: 1,281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.91 : 2,311.32 = 928.94 : x
  2. Step 2: Convert to fraction form
    1,674.91/2,311.32 = 928.94/x
  3. Step 3: Cross multiply
    1,674.91x = 2,311.32 × 928.94
  4. Step 4: Simplify right side
    1,674.91x = 2,147,083.80
  5. Step 5: Solve for x
    x = 2,147,083.80/1,674.91
  6. Step 6: Final answer
    x = 1,281.91

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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.