Home / 5,623.39-8,430.13-2,158.21

Finding the Fourth Proportional to 5,623.39, 8,430.13 and 2,158.21

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Solution

The fourth proportional to 5,623.39, 8,430.13 and 2,158.21 is: 3,235.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,623.39 : 8,430.13 = 2,158.21 : x
  2. Step 2: Convert to fraction form
    5,623.39/8,430.13 = 2,158.21/x
  3. Step 3: Cross multiply
    5,623.39x = 8,430.13 × 2,158.21
  4. Step 4: Simplify right side
    5,623.39x = 18,193,990.87
  5. Step 5: Solve for x
    x = 18,193,990.87/5,623.39
  6. Step 6: Final answer
    x = 3,235.41

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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.