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Finding the Fourth Proportional to 6,420.46, 8,860.17 and 4,064.53

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Solution

The fourth proportional to 6,420.46, 8,860.17 and 4,064.53 is: 5,609.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.46 : 8,860.17 = 4,064.53 : x
  2. Step 2: Convert to fraction form
    6,420.46/8,860.17 = 4,064.53/x
  3. Step 3: Cross multiply
    6,420.46x = 8,860.17 × 4,064.53
  4. Step 4: Simplify right side
    6,420.46x = 36,012,426.77
  5. Step 5: Solve for x
    x = 36,012,426.77/6,420.46
  6. Step 6: Final answer
    x = 5,609.01

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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.