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Finding the Fourth Proportional to 11,497.88, 15,866.88 and 6,782.60

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Solution

The fourth proportional to 11,497.88, 15,866.88 and 6,782.60 is: 9,359.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,497.88 : 15,866.88 = 6,782.60 : x
  2. Step 2: Convert to fraction form
    11,497.88/15,866.88 = 6,782.60/x
  3. Step 3: Cross multiply
    11,497.88x = 15,866.88 × 6,782.60
  4. Step 4: Simplify right side
    11,497.88x = 107,618,700.29
  5. Step 5: Solve for x
    x = 107,618,700.29/11,497.88
  6. Step 6: Final answer
    x = 9,359.87

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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.