Home / 8,699.40-13,039.26-4,319.88

Finding the Fourth Proportional to 8,699.40, 13,039.26 and 4,319.88

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Solution

The fourth proportional to 8,699.40, 13,039.26 and 4,319.88 is: 6,474.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.40 : 13,039.26 = 4,319.88 : x
  2. Step 2: Convert to fraction form
    8,699.40/13,039.26 = 4,319.88/x
  3. Step 3: Cross multiply
    8,699.40x = 13,039.26 × 4,319.88
  4. Step 4: Simplify right side
    8,699.40x = 56,328,038.49
  5. Step 5: Solve for x
    x = 56,328,038.49/8,699.40
  6. Step 6: Final answer
    x = 6,474.93

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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.