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Finding the Fourth Proportional to 4,645, 6,409.38 and 2,655.64

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Solution

The fourth proportional to 4,645, 6,409.38 and 2,655.64 is: 3,664.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,645 : 6,409.38 = 2,655.64 : x
  2. Step 2: Convert to fraction form
    4,645/6,409.38 = 2,655.64/x
  3. Step 3: Cross multiply
    4,645x = 6,409.38 × 2,655.64
  4. Step 4: Simplify right side
    4,645x = 17,021,005.90
  5. Step 5: Solve for x
    x = 17,021,005.90/4,645
  6. Step 6: Final answer
    x = 3,664.37

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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.