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Finding the Fourth Proportional to 8,777.56, 12,112.80 and 4,798.68

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Solution

The fourth proportional to 8,777.56, 12,112.80 and 4,798.68 is: 6,622.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.56 : 12,112.80 = 4,798.68 : x
  2. Step 2: Convert to fraction form
    8,777.56/12,112.80 = 4,798.68/x
  3. Step 3: Cross multiply
    8,777.56x = 12,112.80 × 4,798.68
  4. Step 4: Simplify right side
    8,777.56x = 58,125,451.10
  5. Step 5: Solve for x
    x = 58,125,451.10/8,777.56
  6. Step 6: Final answer
    x = 6,622.05

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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.