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Finding the Fourth Proportional to 8,465.35, 12,699.21 and 3,533.86

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Solution

The fourth proportional to 8,465.35, 12,699.21 and 3,533.86 is: 5,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.35 : 12,699.21 = 3,533.86 : x
  2. Step 2: Convert to fraction form
    8,465.35/12,699.21 = 3,533.86/x
  3. Step 3: Cross multiply
    8,465.35x = 12,699.21 × 3,533.86
  4. Step 4: Simplify right side
    8,465.35x = 44,877,230.25
  5. Step 5: Solve for x
    x = 44,877,230.25/8,465.35
  6. Step 6: Final answer
    x = 5,301.28

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1.5x scale

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.