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Finding the Fourth Proportional to 8,697.90, 13,050.63 and 4,312.86

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Solution

The fourth proportional to 8,697.90, 13,050.63 and 4,312.86 is: 6,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,697.90 : 13,050.63 = 4,312.86 : x
  2. Step 2: Convert to fraction form
    8,697.90/13,050.63 = 4,312.86/x
  3. Step 3: Cross multiply
    8,697.90x = 13,050.63 × 4,312.86
  4. Step 4: Simplify right side
    8,697.90x = 56,285,540.10
  5. Step 5: Solve for x
    x = 56,285,540.10/8,697.90
  6. Step 6: Final answer
    x = 6,471.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.