Home / 5,812.60-8,718.90-1,916.50

Finding the Fourth Proportional to 5,812.60, 8,718.90 and 1,916.50

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Solution

The fourth proportional to 5,812.60, 8,718.90 and 1,916.50 is: 2,874.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,812.60 : 8,718.90 = 1,916.50 : x
  2. Step 2: Convert to fraction form
    5,812.60/8,718.90 = 1,916.50/x
  3. Step 3: Cross multiply
    5,812.60x = 8,718.90 × 1,916.50
  4. Step 4: Simplify right side
    5,812.60x = 16,709,771.85
  5. Step 5: Solve for x
    x = 16,709,771.85/5,812.60
  6. Step 6: Final answer
    x = 2,874.75

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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.