Home / 5,379.81-7,421.88-3,884.46

Finding the Fourth Proportional to 5,379.81, 7,421.88 and 3,884.46

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Solution

The fourth proportional to 5,379.81, 7,421.88 and 3,884.46 is: 5,358.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.81 : 7,421.88 = 3,884.46 : x
  2. Step 2: Convert to fraction form
    5,379.81/7,421.88 = 3,884.46/x
  3. Step 3: Cross multiply
    5,379.81x = 7,421.88 × 3,884.46
  4. Step 4: Simplify right side
    5,379.81x = 28,829,995.98
  5. Step 5: Solve for x
    x = 28,829,995.98/5,379.81
  6. Step 6: Final answer
    x = 5,358.92

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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.