Home / 3,118.35-4,302.95-1,721.01

Finding the Fourth Proportional to 3,118.35, 4,302.95 and 1,721.01

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Solution

The fourth proportional to 3,118.35, 4,302.95 and 1,721.01 is: 2,374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.35 : 4,302.95 = 1,721.01 : x
  2. Step 2: Convert to fraction form
    3,118.35/4,302.95 = 1,721.01/x
  3. Step 3: Cross multiply
    3,118.35x = 4,302.95 × 1,721.01
  4. Step 4: Simplify right side
    3,118.35x = 7,405,411.37
  5. Step 5: Solve for x
    x = 7,405,411.37/3,118.35
  6. Step 6: Final answer
    x = 2,374.79

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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.