Home / 1,890.17-2,607.59-1,103.75

Finding the Fourth Proportional to 1,890.17, 2,607.59 and 1,103.75

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Solution

The fourth proportional to 1,890.17, 2,607.59 and 1,103.75 is: 1,522.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.17 : 2,607.59 = 1,103.75 : x
  2. Step 2: Convert to fraction form
    1,890.17/2,607.59 = 1,103.75/x
  3. Step 3: Cross multiply
    1,890.17x = 2,607.59 × 1,103.75
  4. Step 4: Simplify right side
    1,890.17x = 2,878,121.94
  5. Step 5: Solve for x
    x = 2,878,121.94/1,890.17
  6. Step 6: Final answer
    x = 1,522.68

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1.5x scale

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.