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Finding the Fourth Proportional to 6,420.22, 9,645.89 and 6,066.20

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Solution

The fourth proportional to 6,420.22, 9,645.89 and 6,066.20 is: 9,114.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.22 : 9,645.89 = 6,066.20 : x
  2. Step 2: Convert to fraction form
    6,420.22/9,645.89 = 6,066.20/x
  3. Step 3: Cross multiply
    6,420.22x = 9,645.89 × 6,066.20
  4. Step 4: Simplify right side
    6,420.22x = 58,513,897.92
  5. Step 5: Solve for x
    x = 58,513,897.92/6,420.22
  6. Step 6: Final answer
    x = 9,114.00

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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.