Home / 2,931.96-4,046.19-1,605.75

Finding the Fourth Proportional to 2,931.96, 4,046.19 and 1,605.75

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Solution

The fourth proportional to 2,931.96, 4,046.19 and 1,605.75 is: 2,215.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.96 : 4,046.19 = 1,605.75 : x
  2. Step 2: Convert to fraction form
    2,931.96/4,046.19 = 1,605.75/x
  3. Step 3: Cross multiply
    2,931.96x = 4,046.19 × 1,605.75
  4. Step 4: Simplify right side
    2,931.96x = 6,497,169.59
  5. Step 5: Solve for x
    x = 6,497,169.59/2,931.96
  6. Step 6: Final answer
    x = 2,215.98

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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.