Home / 1,211.29-1,819.01-655.68

Finding the Fourth Proportional to 1,211.29, 1,819.01 and 655.68

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Solution

The fourth proportional to 1,211.29, 1,819.01 and 655.68 is: 984.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.29 : 1,819.01 = 655.68 : x
  2. Step 2: Convert to fraction form
    1,211.29/1,819.01 = 655.68/x
  3. Step 3: Cross multiply
    1,211.29x = 1,819.01 × 655.68
  4. Step 4: Simplify right side
    1,211.29x = 1,192,683.02
  5. Step 5: Solve for x
    x = 1,192,683.02/1,211.29
  6. Step 6: Final answer
    x = 984.64

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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.