Home / 9,282.40-12,790.86-8,626.28

Finding the Fourth Proportional to 9,282.40, 12,790.86 and 8,626.28

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Solution

The fourth proportional to 9,282.40, 12,790.86 and 8,626.28 is: 11,886.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,282.40 : 12,790.86 = 8,626.28 : x
  2. Step 2: Convert to fraction form
    9,282.40/12,790.86 = 8,626.28/x
  3. Step 3: Cross multiply
    9,282.40x = 12,790.86 × 8,626.28
  4. Step 4: Simplify right side
    9,282.40x = 110,337,539.80
  5. Step 5: Solve for x
    x = 110,337,539.80/9,282.40
  6. Step 6: Final answer
    x = 11,886.75

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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.