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Finding the Fourth Proportional to 6,459.55, 8,917.49 and 3,807.81

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Solution

The fourth proportional to 6,459.55, 8,917.49 and 3,807.81 is: 5,256.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,459.55 : 8,917.49 = 3,807.81 : x
  2. Step 2: Convert to fraction form
    6,459.55/8,917.49 = 3,807.81/x
  3. Step 3: Cross multiply
    6,459.55x = 8,917.49 × 3,807.81
  4. Step 4: Simplify right side
    6,459.55x = 33,956,117.12
  5. Step 5: Solve for x
    x = 33,956,117.12/6,459.55
  6. Step 6: Final answer
    x = 5,256.73

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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.