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Finding the Fourth Proportional to 6,507.95, 8,979.40 and 3,856.01

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Solution

The fourth proportional to 6,507.95, 8,979.40 and 3,856.01 is: 5,320.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,507.95 : 8,979.40 = 3,856.01 : x
  2. Step 2: Convert to fraction form
    6,507.95/8,979.40 = 3,856.01/x
  3. Step 3: Cross multiply
    6,507.95x = 8,979.40 × 3,856.01
  4. Step 4: Simplify right side
    6,507.95x = 34,624,656.19
  5. Step 5: Solve for x
    x = 34,624,656.19/6,507.95
  6. Step 6: Final answer
    x = 5,320.36

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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.