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Finding the Fourth Proportional to 6,538.47, 9,807.30 and 2,158.80

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Solution

The fourth proportional to 6,538.47, 9,807.30 and 2,158.80 is: 3,238.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,538.47 : 9,807.30 = 2,158.80 : x
  2. Step 2: Convert to fraction form
    6,538.47/9,807.30 = 2,158.80/x
  3. Step 3: Cross multiply
    6,538.47x = 9,807.30 × 2,158.80
  4. Step 4: Simplify right side
    6,538.47x = 21,171,999.24
  5. Step 5: Solve for x
    x = 21,171,999.24/6,538.47
  6. Step 6: Final answer
    x = 3,238.07

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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.