Home / 5,618.59-8,427.90-3,121.31

Finding the Fourth Proportional to 5,618.59, 8,427.90 and 3,121.31

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Solution

The fourth proportional to 5,618.59, 8,427.90 and 3,121.31 is: 4,681.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.59 : 8,427.90 = 3,121.31 : x
  2. Step 2: Convert to fraction form
    5,618.59/8,427.90 = 3,121.31/x
  3. Step 3: Cross multiply
    5,618.59x = 8,427.90 × 3,121.31
  4. Step 4: Simplify right side
    5,618.59x = 26,306,088.55
  5. Step 5: Solve for x
    x = 26,306,088.55/5,618.59
  6. Step 6: Final answer
    x = 4,681.97

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1.5x scale

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.