Home / 4,279.80-6,420.56-2,088.57

Finding the Fourth Proportional to 4,279.80, 6,420.56 and 2,088.57

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Solution

The fourth proportional to 4,279.80, 6,420.56 and 2,088.57 is: 3,133.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.80 : 6,420.56 = 2,088.57 : x
  2. Step 2: Convert to fraction form
    4,279.80/6,420.56 = 2,088.57/x
  3. Step 3: Cross multiply
    4,279.80x = 6,420.56 × 2,088.57
  4. Step 4: Simplify right side
    4,279.80x = 13,409,789.00
  5. Step 5: Solve for x
    x = 13,409,789.00/4,279.80
  6. Step 6: Final answer
    x = 3,133.27

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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.