Home / 3,279.90-4,526.14-1,787.78

Finding the Fourth Proportional to 3,279.90, 4,526.14 and 1,787.78

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Solution

The fourth proportional to 3,279.90, 4,526.14 and 1,787.78 is: 2,467.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.90 : 4,526.14 = 1,787.78 : x
  2. Step 2: Convert to fraction form
    3,279.90/4,526.14 = 1,787.78/x
  3. Step 3: Cross multiply
    3,279.90x = 4,526.14 × 1,787.78
  4. Step 4: Simplify right side
    3,279.90x = 8,091,733.63
  5. Step 5: Solve for x
    x = 8,091,733.63/3,279.90
  6. Step 6: Final answer
    x = 2,467.07

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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.