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Finding the Fourth Proportional to 2,545.75, 3,819.23 and 790.67

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Solution

The fourth proportional to 2,545.75, 3,819.23 and 790.67 is: 1,186.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,545.75 : 3,819.23 = 790.67 : x
  2. Step 2: Convert to fraction form
    2,545.75/3,819.23 = 790.67/x
  3. Step 3: Cross multiply
    2,545.75x = 3,819.23 × 790.67
  4. Step 4: Simplify right side
    2,545.75x = 3,019,728.52
  5. Step 5: Solve for x
    x = 3,019,728.52/2,545.75
  6. Step 6: Final answer
    x = 1,186.18

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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.