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Finding the Fourth Proportional to 6,277.60, 8,659.38 and 4,038.76

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Solution

The fourth proportional to 6,277.60, 8,659.38 and 4,038.76 is: 5,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,277.60 : 8,659.38 = 4,038.76 : x
  2. Step 2: Convert to fraction form
    6,277.60/8,659.38 = 4,038.76/x
  3. Step 3: Cross multiply
    6,277.60x = 8,659.38 × 4,038.76
  4. Step 4: Simplify right side
    6,277.60x = 34,973,157.57
  5. Step 5: Solve for x
    x = 34,973,157.57/6,277.60
  6. Step 6: Final answer
    x = 5,571.10

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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.