Home / 2,148.23-3,212.91-1,870.31

Finding the Fourth Proportional to 2,148.23, 3,212.91 and 1,870.31

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Solution

The fourth proportional to 2,148.23, 3,212.91 and 1,870.31 is: 2,797.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.23 : 3,212.91 = 1,870.31 : x
  2. Step 2: Convert to fraction form
    2,148.23/3,212.91 = 1,870.31/x
  3. Step 3: Cross multiply
    2,148.23x = 3,212.91 × 1,870.31
  4. Step 4: Simplify right side
    2,148.23x = 6,009,137.70
  5. Step 5: Solve for x
    x = 6,009,137.70/2,148.23
  6. Step 6: Final answer
    x = 2,797.25

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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.