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Finding the Fourth Proportional to 8,959.41, 12,363.89 and 4,980.87

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Solution

The fourth proportional to 8,959.41, 12,363.89 and 4,980.87 is: 6,873.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.41 : 12,363.89 = 4,980.87 : x
  2. Step 2: Convert to fraction form
    8,959.41/12,363.89 = 4,980.87/x
  3. Step 3: Cross multiply
    8,959.41x = 12,363.89 × 4,980.87
  4. Step 4: Simplify right side
    8,959.41x = 61,582,903.88
  5. Step 5: Solve for x
    x = 61,582,903.88/8,959.41
  6. Step 6: Final answer
    x = 6,873.54

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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.