Home / 4,628.23-6,386.90-2,638.78

Finding the Fourth Proportional to 4,628.23, 6,386.90 and 2,638.78

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Solution

The fourth proportional to 4,628.23, 6,386.90 and 2,638.78 is: 3,641.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,628.23 : 6,386.90 = 2,638.78 : x
  2. Step 2: Convert to fraction form
    4,628.23/6,386.90 = 2,638.78/x
  3. Step 3: Cross multiply
    4,628.23x = 6,386.90 × 2,638.78
  4. Step 4: Simplify right side
    4,628.23x = 16,853,623.98
  5. Step 5: Solve for x
    x = 16,853,623.98/4,628.23
  6. Step 6: Final answer
    x = 3,641.48

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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.