Home / 3,215.52-4,820.40-1,654.65

Finding the Fourth Proportional to 3,215.52, 4,820.40 and 1,654.65

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Solution

The fourth proportional to 3,215.52, 4,820.40 and 1,654.65 is: 2,480.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.52 : 4,820.40 = 1,654.65 : x
  2. Step 2: Convert to fraction form
    3,215.52/4,820.40 = 1,654.65/x
  3. Step 3: Cross multiply
    3,215.52x = 4,820.40 × 1,654.65
  4. Step 4: Simplify right side
    3,215.52x = 7,976,074.86
  5. Step 5: Solve for x
    x = 7,976,074.86/3,215.52
  6. Step 6: Final answer
    x = 2,480.49

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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.