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Finding the Fourth Proportional to 10,722.22, 14,782.86 and 6,938.68

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Solution

The fourth proportional to 10,722.22, 14,782.86 and 6,938.68 is: 9,566.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,722.22 : 14,782.86 = 6,938.68 : x
  2. Step 2: Convert to fraction form
    10,722.22/14,782.86 = 6,938.68/x
  3. Step 3: Cross multiply
    10,722.22x = 14,782.86 × 6,938.68
  4. Step 4: Simplify right side
    10,722.22x = 102,573,535.02
  5. Step 5: Solve for x
    x = 102,573,535.02/10,722.22
  6. Step 6: Final answer
    x = 9,566.45

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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.