Home / 4,256.96-6,389.39-2,178.45

Finding the Fourth Proportional to 4,256.96, 6,389.39 and 2,178.45

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Solution

The fourth proportional to 4,256.96, 6,389.39 and 2,178.45 is: 3,269.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,256.96 : 6,389.39 = 2,178.45 : x
  2. Step 2: Convert to fraction form
    4,256.96/6,389.39 = 2,178.45/x
  3. Step 3: Cross multiply
    4,256.96x = 6,389.39 × 2,178.45
  4. Step 4: Simplify right side
    4,256.96x = 13,918,966.65
  5. Step 5: Solve for x
    x = 13,918,966.65/4,256.96
  6. Step 6: Final answer
    x = 3,269.70

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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.