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Finding the Fourth Proportional to 5,630.16, 7,771.81 and 5,039.67

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Solution

The fourth proportional to 5,630.16, 7,771.81 and 5,039.67 is: 6,956.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,630.16 : 7,771.81 = 5,039.67 : x
  2. Step 2: Convert to fraction form
    5,630.16/7,771.81 = 5,039.67/x
  3. Step 3: Cross multiply
    5,630.16x = 7,771.81 × 5,039.67
  4. Step 4: Simplify right side
    5,630.16x = 39,167,357.70
  5. Step 5: Solve for x
    x = 39,167,357.70/5,630.16
  6. Step 6: Final answer
    x = 6,956.70

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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.