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Finding the Fourth Proportional to 5,890.16, 8,840.28 and 3,421.55

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Solution

The fourth proportional to 5,890.16, 8,840.28 and 3,421.55 is: 5,135.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,890.16 : 8,840.28 = 3,421.55 : x
  2. Step 2: Convert to fraction form
    5,890.16/8,840.28 = 3,421.55/x
  3. Step 3: Cross multiply
    5,890.16x = 8,840.28 × 3,421.55
  4. Step 4: Simplify right side
    5,890.16x = 30,247,460.03
  5. Step 5: Solve for x
    x = 30,247,460.03/5,890.16
  6. Step 6: Final answer
    x = 5,135.25

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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.