Home / 1,920.74-2,876.38-1,225.35

Finding the Fourth Proportional to 1,920.74, 2,876.38 and 1,225.35

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Solution

The fourth proportional to 1,920.74, 2,876.38 and 1,225.35 is: 1,835.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.74 : 2,876.38 = 1,225.35 : x
  2. Step 2: Convert to fraction form
    1,920.74/2,876.38 = 1,225.35/x
  3. Step 3: Cross multiply
    1,920.74x = 2,876.38 × 1,225.35
  4. Step 4: Simplify right side
    1,920.74x = 3,524,569.17
  5. Step 5: Solve for x
    x = 3,524,569.17/1,920.74
  6. Step 6: Final answer
    x = 1,835.01

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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.