Home / 5,621.88-8,431.35-1,672.07

Finding the Fourth Proportional to 5,621.88, 8,431.35 and 1,672.07

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Solution

The fourth proportional to 5,621.88, 8,431.35 and 1,672.07 is: 2,507.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.88 : 8,431.35 = 1,672.07 : x
  2. Step 2: Convert to fraction form
    5,621.88/8,431.35 = 1,672.07/x
  3. Step 3: Cross multiply
    5,621.88x = 8,431.35 × 1,672.07
  4. Step 4: Simplify right side
    5,621.88x = 14,097,828.47
  5. Step 5: Solve for x
    x = 14,097,828.47/5,621.88
  6. Step 6: Final answer
    x = 2,507.67

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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.