Home / 9,138.51-13,708.31-2,898.41

Finding the Fourth Proportional to 9,138.51, 13,708.31 and 2,898.41

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Solution

The fourth proportional to 9,138.51, 13,708.31 and 2,898.41 is: 4,347.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.51 : 13,708.31 = 2,898.41 : x
  2. Step 2: Convert to fraction form
    9,138.51/13,708.31 = 2,898.41/x
  3. Step 3: Cross multiply
    9,138.51x = 13,708.31 × 2,898.41
  4. Step 4: Simplify right side
    9,138.51x = 39,732,219.75
  5. Step 5: Solve for x
    x = 39,732,219.75/9,138.51
  6. Step 6: Final answer
    x = 4,347.78

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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.