Home / 7,916.21-11,869.93-3,239.50

Finding the Fourth Proportional to 7,916.21, 11,869.93 and 3,239.50

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Solution

The fourth proportional to 7,916.21, 11,869.93 and 3,239.50 is: 4,857.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.21 : 11,869.93 = 3,239.50 : x
  2. Step 2: Convert to fraction form
    7,916.21/11,869.93 = 3,239.50/x
  3. Step 3: Cross multiply
    7,916.21x = 11,869.93 × 3,239.50
  4. Step 4: Simplify right side
    7,916.21x = 38,452,638.24
  5. Step 5: Solve for x
    x = 38,452,638.24/7,916.21
  6. Step 6: Final answer
    x = 4,857.46

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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.