Home / 1,037.28-1,431.44-571.56

Finding the Fourth Proportional to 1,037.28, 1,431.44 and 571.56

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Solution

The fourth proportional to 1,037.28, 1,431.44 and 571.56 is: 788.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.28 : 1,431.44 = 571.56 : x
  2. Step 2: Convert to fraction form
    1,037.28/1,431.44 = 571.56/x
  3. Step 3: Cross multiply
    1,037.28x = 1,431.44 × 571.56
  4. Step 4: Simplify right side
    1,037.28x = 818,153.85
  5. Step 5: Solve for x
    x = 818,153.85/1,037.28
  6. Step 6: Final answer
    x = 788.75

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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.