Home / 8,199.90-12,302.96-4,915.35

Finding the Fourth Proportional to 8,199.90, 12,302.96 and 4,915.35

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Solution

The fourth proportional to 8,199.90, 12,302.96 and 4,915.35 is: 7,374.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,199.90 : 12,302.96 = 4,915.35 : x
  2. Step 2: Convert to fraction form
    8,199.90/12,302.96 = 4,915.35/x
  3. Step 3: Cross multiply
    8,199.90x = 12,302.96 × 4,915.35
  4. Step 4: Simplify right side
    8,199.90x = 60,473,329.86
  5. Step 5: Solve for x
    x = 60,473,329.86/8,199.90
  6. Step 6: Final answer
    x = 7,374.89

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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.