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Finding the Fourth Proportional to 5,106.90, 7,047.92 and 2,868.92

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Solution

The fourth proportional to 5,106.90, 7,047.92 and 2,868.92 is: 3,959.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.90 : 7,047.92 = 2,868.92 : x
  2. Step 2: Convert to fraction form
    5,106.90/7,047.92 = 2,868.92/x
  3. Step 3: Cross multiply
    5,106.90x = 7,047.92 × 2,868.92
  4. Step 4: Simplify right side
    5,106.90x = 20,219,918.65
  5. Step 5: Solve for x
    x = 20,219,918.65/5,106.90
  6. Step 6: Final answer
    x = 3,959.33

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1.5x scale

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.