Home / 7,790.58-11,688.60-3,411.11

Finding the Fourth Proportional to 7,790.58, 11,688.60 and 3,411.11

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Solution

The fourth proportional to 7,790.58, 11,688.60 and 3,411.11 is: 5,117.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.58 : 11,688.60 = 3,411.11 : x
  2. Step 2: Convert to fraction form
    7,790.58/11,688.60 = 3,411.11/x
  3. Step 3: Cross multiply
    7,790.58x = 11,688.60 × 3,411.11
  4. Step 4: Simplify right side
    7,790.58x = 39,871,142.36
  5. Step 5: Solve for x
    x = 39,871,142.36/7,790.58
  6. Step 6: Final answer
    x = 5,117.87

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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.