Home / 2,903.72-4,008.96-2,156.80

Finding the Fourth Proportional to 2,903.72, 4,008.96 and 2,156.80

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Solution

The fourth proportional to 2,903.72, 4,008.96 and 2,156.80 is: 2,977.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.72 : 4,008.96 = 2,156.80 : x
  2. Step 2: Convert to fraction form
    2,903.72/4,008.96 = 2,156.80/x
  3. Step 3: Cross multiply
    2,903.72x = 4,008.96 × 2,156.80
  4. Step 4: Simplify right side
    2,903.72x = 8,646,524.93
  5. Step 5: Solve for x
    x = 8,646,524.93/2,903.72
  6. Step 6: Final answer
    x = 2,977.74

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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.