Home / 2,106.07-3,156.90-718.93

Finding the Fourth Proportional to 2,106.07, 3,156.90 and 718.93

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Solution

The fourth proportional to 2,106.07, 3,156.90 and 718.93 is: 1,077.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.07 : 3,156.90 = 718.93 : x
  2. Step 2: Convert to fraction form
    2,106.07/3,156.90 = 718.93/x
  3. Step 3: Cross multiply
    2,106.07x = 3,156.90 × 718.93
  4. Step 4: Simplify right side
    2,106.07x = 2,269,590.12
  5. Step 5: Solve for x
    x = 2,269,590.12/2,106.07
  6. Step 6: Final answer
    x = 1,077.64

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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.