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Finding the Fourth Proportional to 9,878.68, 14,801.28 and 8,632.36

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Solution

The fourth proportional to 9,878.68, 14,801.28 and 8,632.36 is: 12,933.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,878.68 : 14,801.28 = 8,632.36 : x
  2. Step 2: Convert to fraction form
    9,878.68/14,801.28 = 8,632.36/x
  3. Step 3: Cross multiply
    9,878.68x = 14,801.28 × 8,632.36
  4. Step 4: Simplify right side
    9,878.68x = 127,769,977.42
  5. Step 5: Solve for x
    x = 127,769,977.42/9,878.68
  6. Step 6: Final answer
    x = 12,933.91

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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.