Home / 9,137.48-13,708.38-2,897.78

Finding the Fourth Proportional to 9,137.48, 13,708.38 and 2,897.78

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Solution

The fourth proportional to 9,137.48, 13,708.38 and 2,897.78 is: 4,347.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,137.48 : 13,708.38 = 2,897.78 : x
  2. Step 2: Convert to fraction form
    9,137.48/13,708.38 = 2,897.78/x
  3. Step 3: Cross multiply
    9,137.48x = 13,708.38 × 2,897.78
  4. Step 4: Simplify right side
    9,137.48x = 39,723,869.40
  5. Step 5: Solve for x
    x = 39,723,869.40/9,137.48
  6. Step 6: Final answer
    x = 4,347.36

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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.