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Finding the Fourth Proportional to 7,326.89, 10,990.24 and 1,780.29

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Solution

The fourth proportional to 7,326.89, 10,990.24 and 1,780.29 is: 2,670.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,326.89 : 10,990.24 = 1,780.29 : x
  2. Step 2: Convert to fraction form
    7,326.89/10,990.24 = 1,780.29/x
  3. Step 3: Cross multiply
    7,326.89x = 10,990.24 × 1,780.29
  4. Step 4: Simplify right side
    7,326.89x = 19,565,814.37
  5. Step 5: Solve for x
    x = 19,565,814.37/7,326.89
  6. Step 6: Final answer
    x = 2,670.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.