Home / 8,437.80-11,621.70-7,314.60

Finding the Fourth Proportional to 8,437.80, 11,621.70 and 7,314.60

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Solution

The fourth proportional to 8,437.80, 11,621.70 and 7,314.60 is: 10,074.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437.80 : 11,621.70 = 7,314.60 : x
  2. Step 2: Convert to fraction form
    8,437.80/11,621.70 = 7,314.60/x
  3. Step 3: Cross multiply
    8,437.80x = 11,621.70 × 7,314.60
  4. Step 4: Simplify right side
    8,437.80x = 85,008,086.82
  5. Step 5: Solve for x
    x = 85,008,086.82/8,437.80
  6. Step 6: Final answer
    x = 10,074.67

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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.