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Finding the Fourth Proportional to 6,243.60, 8,590.32 and 4,742.76

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Solution

The fourth proportional to 6,243.60, 8,590.32 and 4,742.76 is: 6,525.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,243.60 : 8,590.32 = 4,742.76 : x
  2. Step 2: Convert to fraction form
    6,243.60/8,590.32 = 4,742.76/x
  3. Step 3: Cross multiply
    6,243.60x = 8,590.32 × 4,742.76
  4. Step 4: Simplify right side
    6,243.60x = 40,741,826.08
  5. Step 5: Solve for x
    x = 40,741,826.08/6,243.60
  6. Step 6: Final answer
    x = 6,525.37

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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.