Home / 5,811.60-8,718.69-1,915.74

Finding the Fourth Proportional to 5,811.60, 8,718.69 and 1,915.74

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Solution

The fourth proportional to 5,811.60, 8,718.69 and 1,915.74 is: 2,874.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.60 : 8,718.69 = 1,915.74 : x
  2. Step 2: Convert to fraction form
    5,811.60/8,718.69 = 1,915.74/x
  3. Step 3: Cross multiply
    5,811.60x = 8,718.69 × 1,915.74
  4. Step 4: Simplify right side
    5,811.60x = 16,702,743.18
  5. Step 5: Solve for x
    x = 16,702,743.18/5,811.60
  6. Step 6: Final answer
    x = 2,874.04

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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.