Home / 3,128.19-4,696.43-2,870.34

Finding the Fourth Proportional to 3,128.19, 4,696.43 and 2,870.34

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Solution

The fourth proportional to 3,128.19, 4,696.43 and 2,870.34 is: 4,309.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.19 : 4,696.43 = 2,870.34 : x
  2. Step 2: Convert to fraction form
    3,128.19/4,696.43 = 2,870.34/x
  3. Step 3: Cross multiply
    3,128.19x = 4,696.43 × 2,870.34
  4. Step 4: Simplify right side
    3,128.19x = 13,480,336.53
  5. Step 5: Solve for x
    x = 13,480,336.53/3,128.19
  6. Step 6: Final answer
    x = 4,309.31

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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.