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Finding the Fourth Proportional to 8,378.03, 11,532.72 and 7,243.19

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Solution

The fourth proportional to 8,378.03, 11,532.72 and 7,243.19 is: 9,970.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.03 : 11,532.72 = 7,243.19 : x
  2. Step 2: Convert to fraction form
    8,378.03/11,532.72 = 7,243.19/x
  3. Step 3: Cross multiply
    8,378.03x = 11,532.72 × 7,243.19
  4. Step 4: Simplify right side
    8,378.03x = 83,533,624.51
  5. Step 5: Solve for x
    x = 83,533,624.51/8,378.03
  6. Step 6: Final answer
    x = 9,970.56

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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.