Home / 4,026.80-5,559.08-3,128.54

Finding the Fourth Proportional to 4,026.80, 5,559.08 and 3,128.54

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Solution

The fourth proportional to 4,026.80, 5,559.08 and 3,128.54 is: 4,319.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,026.80 : 5,559.08 = 3,128.54 : x
  2. Step 2: Convert to fraction form
    4,026.80/5,559.08 = 3,128.54/x
  3. Step 3: Cross multiply
    4,026.80x = 5,559.08 × 3,128.54
  4. Step 4: Simplify right side
    4,026.80x = 17,391,760.71
  5. Step 5: Solve for x
    x = 17,391,760.71/4,026.80
  6. Step 6: Final answer
    x = 4,319.00

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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.