Home / 8,465.28-12,683.84-2,915.60

Finding the Fourth Proportional to 8,465.28, 12,683.84 and 2,915.60

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Solution

The fourth proportional to 8,465.28, 12,683.84 and 2,915.60 is: 4,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.28 : 12,683.84 = 2,915.60 : x
  2. Step 2: Convert to fraction form
    8,465.28/12,683.84 = 2,915.60/x
  3. Step 3: Cross multiply
    8,465.28x = 12,683.84 × 2,915.60
  4. Step 4: Simplify right side
    8,465.28x = 36,981,003.90
  5. Step 5: Solve for x
    x = 36,981,003.90/8,465.28
  6. Step 6: Final answer
    x = 4,368.55

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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.