Home / 1,431.21-1,974.74-1,037.55

Finding the Fourth Proportional to 1,431.21, 1,974.74 and 1,037.55

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Solution

The fourth proportional to 1,431.21, 1,974.74 and 1,037.55 is: 1,431.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.21 : 1,974.74 = 1,037.55 : x
  2. Step 2: Convert to fraction form
    1,431.21/1,974.74 = 1,037.55/x
  3. Step 3: Cross multiply
    1,431.21x = 1,974.74 × 1,037.55
  4. Step 4: Simplify right side
    1,431.21x = 2,048,886.30
  5. Step 5: Solve for x
    x = 2,048,886.30/1,431.21
  6. Step 6: Final answer
    x = 1,431.58

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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.