Home / 5,421.30-8,119.80-4,449.30

Finding the Fourth Proportional to 5,421.30, 8,119.80 and 4,449.30

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Solution

The fourth proportional to 5,421.30, 8,119.80 and 4,449.30 is: 6,663.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.30 : 8,119.80 = 4,449.30 : x
  2. Step 2: Convert to fraction form
    5,421.30/8,119.80 = 4,449.30/x
  3. Step 3: Cross multiply
    5,421.30x = 8,119.80 × 4,449.30
  4. Step 4: Simplify right side
    5,421.30x = 36,127,426.14
  5. Step 5: Solve for x
    x = 36,127,426.14/5,421.30
  6. Step 6: Final answer
    x = 6,663.98

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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.