Home / 6,389.58-8,817.64-3,557.22

Finding the Fourth Proportional to 6,389.58, 8,817.64 and 3,557.22

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Solution

The fourth proportional to 6,389.58, 8,817.64 and 3,557.22 is: 4,908.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.58 : 8,817.64 = 3,557.22 : x
  2. Step 2: Convert to fraction form
    6,389.58/8,817.64 = 3,557.22/x
  3. Step 3: Cross multiply
    6,389.58x = 8,817.64 × 3,557.22
  4. Step 4: Simplify right side
    6,389.58x = 31,366,285.36
  5. Step 5: Solve for x
    x = 31,366,285.36/6,389.58
  6. Step 6: Final answer
    x = 4,908.97

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1.5x scale

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.