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Finding the Fourth Proportional to 6,315.85, 8,715.87 and 3,483.41

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Solution

The fourth proportional to 6,315.85, 8,715.87 and 3,483.41 is: 4,807.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,315.85 : 8,715.87 = 3,483.41 : x
  2. Step 2: Convert to fraction form
    6,315.85/8,715.87 = 3,483.41/x
  3. Step 3: Cross multiply
    6,315.85x = 8,715.87 × 3,483.41
  4. Step 4: Simplify right side
    6,315.85x = 30,360,890.44
  5. Step 5: Solve for x
    x = 30,360,890.44/6,315.85
  6. Step 6: Final answer
    x = 4,807.10

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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.