Home / 1,869.88-2,580.24-1,345

Finding the Fourth Proportional to 1,869.88, 2,580.24 and 1,345

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Solution

The fourth proportional to 1,869.88, 2,580.24 and 1,345 is: 1,855.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.88 : 2,580.24 = 1,345 : x
  2. Step 2: Convert to fraction form
    1,869.88/2,580.24 = 1,345/x
  3. Step 3: Cross multiply
    1,869.88x = 2,580.24 × 1,345
  4. Step 4: Simplify right side
    1,869.88x = 3,470,422.80
  5. Step 5: Solve for x
    x = 3,470,422.80/1,869.88
  6. Step 6: Final answer
    x = 1,855.96

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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.