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Finding the Fourth Proportional to 2,891.72, 4,337.60 and 700.45

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Solution

The fourth proportional to 2,891.72, 4,337.60 and 700.45 is: 1,050.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.72 : 4,337.60 = 700.45 : x
  2. Step 2: Convert to fraction form
    2,891.72/4,337.60 = 700.45/x
  3. Step 3: Cross multiply
    2,891.72x = 4,337.60 × 700.45
  4. Step 4: Simplify right side
    2,891.72x = 3,038,257.57
  5. Step 5: Solve for x
    x = 3,038,257.57/2,891.72
  6. Step 6: Final answer
    x = 1,050.67

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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.