Home / 4,638.13-6,400.55-3,243.31

Finding the Fourth Proportional to 4,638.13, 6,400.55 and 3,243.31

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Solution

The fourth proportional to 4,638.13, 6,400.55 and 3,243.31 is: 4,475.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,638.13 : 6,400.55 = 3,243.31 : x
  2. Step 2: Convert to fraction form
    4,638.13/6,400.55 = 3,243.31/x
  3. Step 3: Cross multiply
    4,638.13x = 6,400.55 × 3,243.31
  4. Step 4: Simplify right side
    4,638.13x = 20,758,959.93
  5. Step 5: Solve for x
    x = 20,758,959.93/4,638.13
  6. Step 6: Final answer
    x = 4,475.72

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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.