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Finding the Fourth Proportional to 6,420.51, 9,631.98 and 3,650.31

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Solution

The fourth proportional to 6,420.51, 9,631.98 and 3,650.31 is: 5,476.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.51 : 9,631.98 = 3,650.31 : x
  2. Step 2: Convert to fraction form
    6,420.51/9,631.98 = 3,650.31/x
  3. Step 3: Cross multiply
    6,420.51x = 9,631.98 × 3,650.31
  4. Step 4: Simplify right side
    6,420.51x = 35,159,712.91
  5. Step 5: Solve for x
    x = 35,159,712.91/6,420.51
  6. Step 6: Final answer
    x = 5,476.16

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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.