Home / 4,259.76-6,390.72-2,178.96

Finding the Fourth Proportional to 4,259.76, 6,390.72 and 2,178.96

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Solution

The fourth proportional to 4,259.76, 6,390.72 and 2,178.96 is: 3,268.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,259.76 : 6,390.72 = 2,178.96 : x
  2. Step 2: Convert to fraction form
    4,259.76/6,390.72 = 2,178.96/x
  3. Step 3: Cross multiply
    4,259.76x = 6,390.72 × 2,178.96
  4. Step 4: Simplify right side
    4,259.76x = 13,925,123.25
  5. Step 5: Solve for x
    x = 13,925,123.25/4,259.76
  6. Step 6: Final answer
    x = 3,268.99

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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.