Home / 1,310.12-1,965.46-432.58

Finding the Fourth Proportional to 1,310.12, 1,965.46 and 432.58

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Solution

The fourth proportional to 1,310.12, 1,965.46 and 432.58 is: 648.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.12 : 1,965.46 = 432.58 : x
  2. Step 2: Convert to fraction form
    1,310.12/1,965.46 = 432.58/x
  3. Step 3: Cross multiply
    1,310.12x = 1,965.46 × 432.58
  4. Step 4: Simplify right side
    1,310.12x = 850,212.69
  5. Step 5: Solve for x
    x = 850,212.69/1,310.12
  6. Step 6: Final answer
    x = 648.96

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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.