Home / 1,638.86-2,445.71-1,463.70

Finding the Fourth Proportional to 1,638.86, 2,445.71 and 1,463.70

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Solution

The fourth proportional to 1,638.86, 2,445.71 and 1,463.70 is: 2,184.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.86 : 2,445.71 = 1,463.70 : x
  2. Step 2: Convert to fraction form
    1,638.86/2,445.71 = 1,463.70/x
  3. Step 3: Cross multiply
    1,638.86x = 2,445.71 × 1,463.70
  4. Step 4: Simplify right side
    1,638.86x = 3,579,778.41
  5. Step 5: Solve for x
    x = 3,579,778.41/1,638.86
  6. Step 6: Final answer
    x = 2,184.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.