Home / 2,106.23-3,159.52-646.41

Finding the Fourth Proportional to 2,106.23, 3,159.52 and 646.41

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Solution

The fourth proportional to 2,106.23, 3,159.52 and 646.41 is: 969.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.23 : 3,159.52 = 646.41 : x
  2. Step 2: Convert to fraction form
    2,106.23/3,159.52 = 646.41/x
  3. Step 3: Cross multiply
    2,106.23x = 3,159.52 × 646.41
  4. Step 4: Simplify right side
    2,106.23x = 2,042,345.32
  5. Step 5: Solve for x
    x = 2,042,345.32/2,106.23
  6. Step 6: Final answer
    x = 969.67

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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.