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Finding the Fourth Proportional to 8,700.35, 13,051.73 and 4,316.63

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Solution

The fourth proportional to 8,700.35, 13,051.73 and 4,316.63 is: 6,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.35 : 13,051.73 = 4,316.63 : x
  2. Step 2: Convert to fraction form
    8,700.35/13,051.73 = 4,316.63/x
  3. Step 3: Cross multiply
    8,700.35x = 13,051.73 × 4,316.63
  4. Step 4: Simplify right side
    8,700.35x = 56,339,434.80
  5. Step 5: Solve for x
    x = 56,339,434.80/8,700.35
  6. Step 6: Final answer
    x = 6,475.54

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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.