Home / 1,421.31-2,131.28-599.37

Finding the Fourth Proportional to 1,421.31, 2,131.28 and 599.37

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Solution

The fourth proportional to 1,421.31, 2,131.28 and 599.37 is: 898.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.31 : 2,131.28 = 599.37 : x
  2. Step 2: Convert to fraction form
    1,421.31/2,131.28 = 599.37/x
  3. Step 3: Cross multiply
    1,421.31x = 2,131.28 × 599.37
  4. Step 4: Simplify right side
    1,421.31x = 1,277,416.55
  5. Step 5: Solve for x
    x = 1,277,416.55/1,421.31
  6. Step 6: Final answer
    x = 898.76

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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.