Home / 6,420.10-9,644.55-6,247.30

Finding the Fourth Proportional to 6,420.10, 9,644.55 and 6,247.30

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Solution

The fourth proportional to 6,420.10, 9,644.55 and 6,247.30 is: 9,384.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.10 : 9,644.55 = 6,247.30 : x
  2. Step 2: Convert to fraction form
    6,420.10/9,644.55 = 6,247.30/x
  3. Step 3: Cross multiply
    6,420.10x = 9,644.55 × 6,247.30
  4. Step 4: Simplify right side
    6,420.10x = 60,252,397.22
  5. Step 5: Solve for x
    x = 60,252,397.22/6,420.10
  6. Step 6: Final answer
    x = 9,384.96

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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.