Home / 4,275.08-6,404.31-2,809.78

Finding the Fourth Proportional to 4,275.08, 6,404.31 and 2,809.78

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Solution

The fourth proportional to 4,275.08, 6,404.31 and 2,809.78 is: 4,209.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,275.08 : 6,404.31 = 2,809.78 : x
  2. Step 2: Convert to fraction form
    4,275.08/6,404.31 = 2,809.78/x
  3. Step 3: Cross multiply
    4,275.08x = 6,404.31 × 2,809.78
  4. Step 4: Simplify right side
    4,275.08x = 17,994,702.15
  5. Step 5: Solve for x
    x = 17,994,702.15/4,275.08
  6. Step 6: Final answer
    x = 4,209.21

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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.