Home / 4,899.21-6,758.40-3,128.95

Finding the Fourth Proportional to 4,899.21, 6,758.40 and 3,128.95

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Solution

The fourth proportional to 4,899.21, 6,758.40 and 3,128.95 is: 4,316.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,899.21 : 6,758.40 = 3,128.95 : x
  2. Step 2: Convert to fraction form
    4,899.21/6,758.40 = 3,128.95/x
  3. Step 3: Cross multiply
    4,899.21x = 6,758.40 × 3,128.95
  4. Step 4: Simplify right side
    4,899.21x = 21,146,695.68
  5. Step 5: Solve for x
    x = 21,146,695.68/4,899.21
  6. Step 6: Final answer
    x = 4,316.35

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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.