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Finding the Fourth Proportional to 9,970.26, 13,759.20 and 5,494.20

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Solution

The fourth proportional to 9,970.26, 13,759.20 and 5,494.20 is: 7,582.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,970.26 : 13,759.20 = 5,494.20 : x
  2. Step 2: Convert to fraction form
    9,970.26/13,759.20 = 5,494.20/x
  3. Step 3: Cross multiply
    9,970.26x = 13,759.20 × 5,494.20
  4. Step 4: Simplify right side
    9,970.26x = 75,595,796.64
  5. Step 5: Solve for x
    x = 75,595,796.64/9,970.26
  6. Step 6: Final answer
    x = 7,582.13

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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.