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Finding the Fourth Proportional to 28,582.98, 42,880.85 and 8,861.70

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Solution

The fourth proportional to 28,582.98, 42,880.85 and 8,861.70 is: 13,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,582.98 : 42,880.85 = 8,861.70 : x
  2. Step 2: Convert to fraction form
    28,582.98/42,880.85 = 8,861.70/x
  3. Step 3: Cross multiply
    28,582.98x = 42,880.85 × 8,861.70
  4. Step 4: Simplify right side
    28,582.98x = 379,997,228.45
  5. Step 5: Solve for x
    x = 379,997,228.45/28,582.98
  6. Step 6: Final answer
    x = 13,294.53

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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.