Home / 6,389.18-8,816.96-3,557.02

Finding the Fourth Proportional to 6,389.18, 8,816.96 and 3,557.02

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Solution

The fourth proportional to 6,389.18, 8,816.96 and 3,557.02 is: 4,908.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.18 : 8,816.96 = 3,557.02 : x
  2. Step 2: Convert to fraction form
    6,389.18/8,816.96 = 3,557.02/x
  3. Step 3: Cross multiply
    6,389.18x = 8,816.96 × 3,557.02
  4. Step 4: Simplify right side
    6,389.18x = 31,362,103.06
  5. Step 5: Solve for x
    x = 31,362,103.06/6,389.18
  6. Step 6: Final answer
    x = 4,908.63

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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.