Home / 7,125.14-10,687.72-1,931.02

Finding the Fourth Proportional to 7,125.14, 10,687.72 and 1,931.02

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Solution

The fourth proportional to 7,125.14, 10,687.72 and 1,931.02 is: 2,896.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.14 : 10,687.72 = 1,931.02 : x
  2. Step 2: Convert to fraction form
    7,125.14/10,687.72 = 1,931.02/x
  3. Step 3: Cross multiply
    7,125.14x = 10,687.72 × 1,931.02
  4. Step 4: Simplify right side
    7,125.14x = 20,638,201.07
  5. Step 5: Solve for x
    x = 20,638,201.07/7,125.14
  6. Step 6: Final answer
    x = 2,896.53

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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.