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Finding the Fourth Proportional to 9,362.78, 12,926.00 and 6,985.80

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Solution

The fourth proportional to 9,362.78, 12,926.00 and 6,985.80 is: 9,644.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.78 : 12,926.00 = 6,985.80 : x
  2. Step 2: Convert to fraction form
    9,362.78/12,926.00 = 6,985.80/x
  3. Step 3: Cross multiply
    9,362.78x = 12,926.00 × 6,985.80
  4. Step 4: Simplify right side
    9,362.78x = 90,298,415.87
  5. Step 5: Solve for x
    x = 90,298,415.87/9,362.78
  6. Step 6: Final answer
    x = 9,644.41

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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.