Home / 4,076.88-6,115.32-1,155.20

Finding the Fourth Proportional to 4,076.88, 6,115.32 and 1,155.20

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Solution

The fourth proportional to 4,076.88, 6,115.32 and 1,155.20 is: 1,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,076.88 : 6,115.32 = 1,155.20 : x
  2. Step 2: Convert to fraction form
    4,076.88/6,115.32 = 1,155.20/x
  3. Step 3: Cross multiply
    4,076.88x = 6,115.32 × 1,155.20
  4. Step 4: Simplify right side
    4,076.88x = 7,064,417.66
  5. Step 5: Solve for x
    x = 7,064,417.66/4,076.88
  6. Step 6: Final answer
    x = 1,732.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.