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Finding the Fourth Proportional to 8,890.74, 13,340.43 and 6,946.74

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Solution

The fourth proportional to 8,890.74, 13,340.43 and 6,946.74 is: 10,423.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890.74 : 13,340.43 = 6,946.74 : x
  2. Step 2: Convert to fraction form
    8,890.74/13,340.43 = 6,946.74/x
  3. Step 3: Cross multiply
    8,890.74x = 13,340.43 × 6,946.74
  4. Step 4: Simplify right side
    8,890.74x = 92,672,498.70
  5. Step 5: Solve for x
    x = 92,672,498.70/8,890.74
  6. Step 6: Final answer
    x = 10,423.49

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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.