Home / 1,685.11-2,326.60-1,055.90

Finding the Fourth Proportional to 1,685.11, 2,326.60 and 1,055.90

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Solution

The fourth proportional to 1,685.11, 2,326.60 and 1,055.90 is: 1,457.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.11 : 2,326.60 = 1,055.90 : x
  2. Step 2: Convert to fraction form
    1,685.11/2,326.60 = 1,055.90/x
  3. Step 3: Cross multiply
    1,685.11x = 2,326.60 × 1,055.90
  4. Step 4: Simplify right side
    1,685.11x = 2,456,656.94
  5. Step 5: Solve for x
    x = 2,456,656.94/1,685.11
  6. Step 6: Final answer
    x = 1,457.86

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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.