Home / 5,811.40-8,717.10-1,915.60

Finding the Fourth Proportional to 5,811.40, 8,717.10 and 1,915.60

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Solution

The fourth proportional to 5,811.40, 8,717.10 and 1,915.60 is: 2,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.40 : 8,717.10 = 1,915.60 : x
  2. Step 2: Convert to fraction form
    5,811.40/8,717.10 = 1,915.60/x
  3. Step 3: Cross multiply
    5,811.40x = 8,717.10 × 1,915.60
  4. Step 4: Simplify right side
    5,811.40x = 16,698,476.76
  5. Step 5: Solve for x
    x = 16,698,476.76/5,811.40
  6. Step 6: Final answer
    x = 2,873.40

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1.5x scale

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.