Home / 5,400.34-7,459.50-3,986.90

Finding the Fourth Proportional to 5,400.34, 7,459.50 and 3,986.90

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Solution

The fourth proportional to 5,400.34, 7,459.50 and 3,986.90 is: 5,507.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,400.34 : 7,459.50 = 3,986.90 : x
  2. Step 2: Convert to fraction form
    5,400.34/7,459.50 = 3,986.90/x
  3. Step 3: Cross multiply
    5,400.34x = 7,459.50 × 3,986.90
  4. Step 4: Simplify right side
    5,400.34x = 29,740,280.55
  5. Step 5: Solve for x
    x = 29,740,280.55/5,400.34
  6. Step 6: Final answer
    x = 5,507.11

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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.