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Finding the Fourth Proportional to 8,928.58, 12,322.90 and 8,534.86

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Solution

The fourth proportional to 8,928.58, 12,322.90 and 8,534.86 is: 11,779.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.58 : 12,322.90 = 8,534.86 : x
  2. Step 2: Convert to fraction form
    8,928.58/12,322.90 = 8,534.86/x
  3. Step 3: Cross multiply
    8,928.58x = 12,322.90 × 8,534.86
  4. Step 4: Simplify right side
    8,928.58x = 105,174,226.29
  5. Step 5: Solve for x
    x = 105,174,226.29/8,928.58
  6. Step 6: Final answer
    x = 11,779.50

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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.