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Finding the Fourth Proportional to 5,358.83, 7,394.78 and 3,000.65

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Solution

The fourth proportional to 5,358.83, 7,394.78 and 3,000.65 is: 4,140.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358.83 : 7,394.78 = 3,000.65 : x
  2. Step 2: Convert to fraction form
    5,358.83/7,394.78 = 3,000.65/x
  3. Step 3: Cross multiply
    5,358.83x = 7,394.78 × 3,000.65
  4. Step 4: Simplify right side
    5,358.83x = 22,189,131.60
  5. Step 5: Solve for x
    x = 22,189,131.60/5,358.83
  6. Step 6: Final answer
    x = 4,140.67

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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.