Home / 8,742.72-13,115.40-2,898

Finding the Fourth Proportional to 8,742.72, 13,115.40 and 2,898

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Solution

The fourth proportional to 8,742.72, 13,115.40 and 2,898 is: 4,347.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.72 : 13,115.40 = 2,898 : x
  2. Step 2: Convert to fraction form
    8,742.72/13,115.40 = 2,898/x
  3. Step 3: Cross multiply
    8,742.72x = 13,115.40 × 2,898
  4. Step 4: Simplify right side
    8,742.72x = 38,008,429.20
  5. Step 5: Solve for x
    x = 38,008,429.20/8,742.72
  6. Step 6: Final answer
    x = 4,347.44

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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.