Home / 3,157.72-4,356.76-2,038.68

Finding the Fourth Proportional to 3,157.72, 4,356.76 and 2,038.68

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Solution

The fourth proportional to 3,157.72, 4,356.76 and 2,038.68 is: 2,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.72 : 4,356.76 = 2,038.68 : x
  2. Step 2: Convert to fraction form
    3,157.72/4,356.76 = 2,038.68/x
  3. Step 3: Cross multiply
    3,157.72x = 4,356.76 × 2,038.68
  4. Step 4: Simplify right side
    3,157.72x = 8,882,039.48
  5. Step 5: Solve for x
    x = 8,882,039.48/3,157.72
  6. Step 6: Final answer
    x = 2,812.80

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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.