Home / 6,415.50-8,860.68-4,315.98

Finding the Fourth Proportional to 6,415.50, 8,860.68 and 4,315.98

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Solution

The fourth proportional to 6,415.50, 8,860.68 and 4,315.98 is: 5,960.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.50 : 8,860.68 = 4,315.98 : x
  2. Step 2: Convert to fraction form
    6,415.50/8,860.68 = 4,315.98/x
  3. Step 3: Cross multiply
    6,415.50x = 8,860.68 × 4,315.98
  4. Step 4: Simplify right side
    6,415.50x = 38,242,517.67
  5. Step 5: Solve for x
    x = 38,242,517.67/6,415.50
  6. Step 6: Final answer
    x = 5,960.96

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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.