Home / 1,091.46-1,628.81-974.69

Finding the Fourth Proportional to 1,091.46, 1,628.81 and 974.69

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Solution

The fourth proportional to 1,091.46, 1,628.81 and 974.69 is: 1,454.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.46 : 1,628.81 = 974.69 : x
  2. Step 2: Convert to fraction form
    1,091.46/1,628.81 = 974.69/x
  3. Step 3: Cross multiply
    1,091.46x = 1,628.81 × 974.69
  4. Step 4: Simplify right side
    1,091.46x = 1,587,582.94
  5. Step 5: Solve for x
    x = 1,587,582.94/1,091.46
  6. Step 6: Final answer
    x = 1,454.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.