Home / 8,919.99-12,310.28-4,941.47

Finding the Fourth Proportional to 8,919.99, 12,310.28 and 4,941.47

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Solution

The fourth proportional to 8,919.99, 12,310.28 and 4,941.47 is: 6,819.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.99 : 12,310.28 = 4,941.47 : x
  2. Step 2: Convert to fraction form
    8,919.99/12,310.28 = 4,941.47/x
  3. Step 3: Cross multiply
    8,919.99x = 12,310.28 × 4,941.47
  4. Step 4: Simplify right side
    8,919.99x = 60,830,903.91
  5. Step 5: Solve for x
    x = 60,830,903.91/8,919.99
  6. Step 6: Final answer
    x = 6,819.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.