Home / 2,190.88-3,284.58-1,265.40

Finding the Fourth Proportional to 2,190.88, 3,284.58 and 1,265.40

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Solution

The fourth proportional to 2,190.88, 3,284.58 and 1,265.40 is: 1,897.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.88 : 3,284.58 = 1,265.40 : x
  2. Step 2: Convert to fraction form
    2,190.88/3,284.58 = 1,265.40/x
  3. Step 3: Cross multiply
    2,190.88x = 3,284.58 × 1,265.40
  4. Step 4: Simplify right side
    2,190.88x = 4,156,307.53
  5. Step 5: Solve for x
    x = 4,156,307.53/2,190.88
  6. Step 6: Final answer
    x = 1,897.10

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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.