Home / 1,790.81-2,685.39-1,165.49

Finding the Fourth Proportional to 1,790.81, 2,685.39 and 1,165.49

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Solution

The fourth proportional to 1,790.81, 2,685.39 and 1,165.49 is: 1,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.81 : 2,685.39 = 1,165.49 : x
  2. Step 2: Convert to fraction form
    1,790.81/2,685.39 = 1,165.49/x
  3. Step 3: Cross multiply
    1,790.81x = 2,685.39 × 1,165.49
  4. Step 4: Simplify right side
    1,790.81x = 3,129,795.19
  5. Step 5: Solve for x
    x = 3,129,795.19/1,790.81
  6. Step 6: Final answer
    x = 1,747.70

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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.