Home / 3,139.07-4,704.53-1,288.08

Finding the Fourth Proportional to 3,139.07, 4,704.53 and 1,288.08

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Solution

The fourth proportional to 3,139.07, 4,704.53 and 1,288.08 is: 1,930.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.07 : 4,704.53 = 1,288.08 : x
  2. Step 2: Convert to fraction form
    3,139.07/4,704.53 = 1,288.08/x
  3. Step 3: Cross multiply
    3,139.07x = 4,704.53 × 1,288.08
  4. Step 4: Simplify right side
    3,139.07x = 6,059,804.56
  5. Step 5: Solve for x
    x = 6,059,804.56/3,139.07
  6. Step 6: Final answer
    x = 1,930.45

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1.5x scale

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.