Home / 6,420.89-9,609.45-4,773.35

Finding the Fourth Proportional to 6,420.89, 9,609.45 and 4,773.35

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Solution

The fourth proportional to 6,420.89, 9,609.45 and 4,773.35 is: 7,143.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.89 : 9,609.45 = 4,773.35 : x
  2. Step 2: Convert to fraction form
    6,420.89/9,609.45 = 4,773.35/x
  3. Step 3: Cross multiply
    6,420.89x = 9,609.45 × 4,773.35
  4. Step 4: Simplify right side
    6,420.89x = 45,869,220.11
  5. Step 5: Solve for x
    x = 45,869,220.11/6,420.89
  6. Step 6: Final answer
    x = 7,143.75

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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.