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Finding the Fourth Proportional to 8,889, 12,256.80 and 5,698.08

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Solution

The fourth proportional to 8,889, 12,256.80 and 5,698.08 is: 7,856.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889 : 12,256.80 = 5,698.08 : x
  2. Step 2: Convert to fraction form
    8,889/12,256.80 = 5,698.08/x
  3. Step 3: Cross multiply
    8,889x = 12,256.80 × 5,698.08
  4. Step 4: Simplify right side
    8,889x = 69,840,226.94
  5. Step 5: Solve for x
    x = 69,840,226.94/8,889
  6. Step 6: Final answer
    x = 7,856.93

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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.