Home / 3,139.02-4,704.66-1,288.98

Finding the Fourth Proportional to 3,139.02, 4,704.66 and 1,288.98

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Solution

The fourth proportional to 3,139.02, 4,704.66 and 1,288.98 is: 1,931.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.02 : 4,704.66 = 1,288.98 : x
  2. Step 2: Convert to fraction form
    3,139.02/4,704.66 = 1,288.98/x
  3. Step 3: Cross multiply
    3,139.02x = 4,704.66 × 1,288.98
  4. Step 4: Simplify right side
    3,139.02x = 6,064,212.65
  5. Step 5: Solve for x
    x = 6,064,212.65/3,139.02
  6. Step 6: Final answer
    x = 1,931.88

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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.