Home / 2,945.65-4,064.99-1,686.71

Finding the Fourth Proportional to 2,945.65, 4,064.99 and 1,686.71

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Solution

The fourth proportional to 2,945.65, 4,064.99 and 1,686.71 is: 2,327.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.65 : 4,064.99 = 1,686.71 : x
  2. Step 2: Convert to fraction form
    2,945.65/4,064.99 = 1,686.71/x
  3. Step 3: Cross multiply
    2,945.65x = 4,064.99 × 1,686.71
  4. Step 4: Simplify right side
    2,945.65x = 6,856,459.28
  5. Step 5: Solve for x
    x = 6,856,459.28/2,945.65
  6. Step 6: Final answer
    x = 2,327.66

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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.