Home / 5,315.40-7,975.92-4,084.98

Finding the Fourth Proportional to 5,315.40, 7,975.92 and 4,084.98

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Solution

The fourth proportional to 5,315.40, 7,975.92 and 4,084.98 is: 6,129.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.40 : 7,975.92 = 4,084.98 : x
  2. Step 2: Convert to fraction form
    5,315.40/7,975.92 = 4,084.98/x
  3. Step 3: Cross multiply
    5,315.40x = 7,975.92 × 4,084.98
  4. Step 4: Simplify right side
    5,315.40x = 32,581,473.68
  5. Step 5: Solve for x
    x = 32,581,473.68/5,315.40
  6. Step 6: Final answer
    x = 6,129.64

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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.