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Finding the Fourth Proportional to 7,782.51, 10,740.17 and 4,425.63

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Solution

The fourth proportional to 7,782.51, 10,740.17 and 4,425.63 is: 6,107.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,782.51 : 10,740.17 = 4,425.63 : x
  2. Step 2: Convert to fraction form
    7,782.51/10,740.17 = 4,425.63/x
  3. Step 3: Cross multiply
    7,782.51x = 10,740.17 × 4,425.63
  4. Step 4: Simplify right side
    7,782.51x = 47,531,996.43
  5. Step 5: Solve for x
    x = 47,531,996.43/7,782.51
  6. Step 6: Final answer
    x = 6,107.54

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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.