Home / 4,721.36-7,077.11-2,638.31

Finding the Fourth Proportional to 4,721.36, 7,077.11 and 2,638.31

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Solution

The fourth proportional to 4,721.36, 7,077.11 and 2,638.31 is: 3,954.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.36 : 7,077.11 = 2,638.31 : x
  2. Step 2: Convert to fraction form
    4,721.36/7,077.11 = 2,638.31/x
  3. Step 3: Cross multiply
    4,721.36x = 7,077.11 × 2,638.31
  4. Step 4: Simplify right side
    4,721.36x = 18,671,561.51
  5. Step 5: Solve for x
    x = 18,671,561.51/4,721.36
  6. Step 6: Final answer
    x = 3,954.70

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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.