Home / 6,390.35-8,817.98-3,557.28

Finding the Fourth Proportional to 6,390.35, 8,817.98 and 3,557.28

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Solution

The fourth proportional to 6,390.35, 8,817.98 and 3,557.28 is: 4,908.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.35 : 8,817.98 = 3,557.28 : x
  2. Step 2: Convert to fraction form
    6,390.35/8,817.98 = 3,557.28/x
  3. Step 3: Cross multiply
    6,390.35x = 8,817.98 × 3,557.28
  4. Step 4: Simplify right side
    6,390.35x = 31,368,006.11
  5. Step 5: Solve for x
    x = 31,368,006.11/6,390.35
  6. Step 6: Final answer
    x = 4,908.66

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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.