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Finding the Fourth Proportional to 7,014.76, 9,679.96 and 3,870.94

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Solution

The fourth proportional to 7,014.76, 9,679.96 and 3,870.94 is: 5,341.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,014.76 : 9,679.96 = 3,870.94 : x
  2. Step 2: Convert to fraction form
    7,014.76/9,679.96 = 3,870.94/x
  3. Step 3: Cross multiply
    7,014.76x = 9,679.96 × 3,870.94
  4. Step 4: Simplify right side
    7,014.76x = 37,470,544.36
  5. Step 5: Solve for x
    x = 37,470,544.36/7,014.76
  6. Step 6: Final answer
    x = 5,341.67

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Half scale
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Double scale
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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.