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Finding the Fourth Proportional to 9,260.49, 12,779.49 and 5,281.50

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Solution

The fourth proportional to 9,260.49, 12,779.49 and 5,281.50 is: 7,288.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,260.49 : 12,779.49 = 5,281.50 : x
  2. Step 2: Convert to fraction form
    9,260.49/12,779.49 = 5,281.50/x
  3. Step 3: Cross multiply
    9,260.49x = 12,779.49 × 5,281.50
  4. Step 4: Simplify right side
    9,260.49x = 67,494,876.44
  5. Step 5: Solve for x
    x = 67,494,876.44/9,260.49
  6. Step 6: Final answer
    x = 7,288.48

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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.