Home / 1,885.56-2,829.15-911.67

Finding the Fourth Proportional to 1,885.56, 2,829.15 and 911.67

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Solution

The fourth proportional to 1,885.56, 2,829.15 and 911.67 is: 1,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.56 : 2,829.15 = 911.67 : x
  2. Step 2: Convert to fraction form
    1,885.56/2,829.15 = 911.67/x
  3. Step 3: Cross multiply
    1,885.56x = 2,829.15 × 911.67
  4. Step 4: Simplify right side
    1,885.56x = 2,579,251.18
  5. Step 5: Solve for x
    x = 2,579,251.18/1,885.56
  6. Step 6: Final answer
    x = 1,367.90

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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.