Home / 1,869.57-2,580.12-1,072.95

Finding the Fourth Proportional to 1,869.57, 2,580.12 and 1,072.95

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Solution

The fourth proportional to 1,869.57, 2,580.12 and 1,072.95 is: 1,480.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.57 : 2,580.12 = 1,072.95 : x
  2. Step 2: Convert to fraction form
    1,869.57/2,580.12 = 1,072.95/x
  3. Step 3: Cross multiply
    1,869.57x = 2,580.12 × 1,072.95
  4. Step 4: Simplify right side
    1,869.57x = 2,768,339.75
  5. Step 5: Solve for x
    x = 2,768,339.75/1,869.57
  6. Step 6: Final answer
    x = 1,480.74

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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.