Home / 1,431.28-1,975.56-1,037.56

Finding the Fourth Proportional to 1,431.28, 1,975.56 and 1,037.56

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Solution

The fourth proportional to 1,431.28, 1,975.56 and 1,037.56 is: 1,432.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.28 : 1,975.56 = 1,037.56 : x
  2. Step 2: Convert to fraction form
    1,431.28/1,975.56 = 1,037.56/x
  3. Step 3: Cross multiply
    1,431.28x = 1,975.56 × 1,037.56
  4. Step 4: Simplify right side
    1,431.28x = 2,049,762.03
  5. Step 5: Solve for x
    x = 2,049,762.03/1,431.28
  6. Step 6: Final answer
    x = 1,432.12

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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.