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Finding the Fourth Proportional to 6,378.81, 8,801.40 and 3,725.01

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Solution

The fourth proportional to 6,378.81, 8,801.40 and 3,725.01 is: 5,139.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.81 : 8,801.40 = 3,725.01 : x
  2. Step 2: Convert to fraction form
    6,378.81/8,801.40 = 3,725.01/x
  3. Step 3: Cross multiply
    6,378.81x = 8,801.40 × 3,725.01
  4. Step 4: Simplify right side
    6,378.81x = 32,785,303.01
  5. Step 5: Solve for x
    x = 32,785,303.01/6,378.81
  6. Step 6: Final answer
    x = 5,139.72

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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.