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Finding the Fourth Proportional to 9,219.78, 13,848.84 and 8,973.72

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Solution

The fourth proportional to 9,219.78, 13,848.84 and 8,973.72 is: 13,479.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219.78 : 13,848.84 = 8,973.72 : x
  2. Step 2: Convert to fraction form
    9,219.78/13,848.84 = 8,973.72/x
  3. Step 3: Cross multiply
    9,219.78x = 13,848.84 × 8,973.72
  4. Step 4: Simplify right side
    9,219.78x = 124,275,612.48
  5. Step 5: Solve for x
    x = 124,275,612.48/9,219.78
  6. Step 6: Final answer
    x = 13,479.24

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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.