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Finding the Fourth Proportional to 1,920.03, 2,862.98 and 1,916.39

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Solution

The fourth proportional to 1,920.03, 2,862.98 and 1,916.39 is: 2,857.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.03 : 2,862.98 = 1,916.39 : x
  2. Step 2: Convert to fraction form
    1,920.03/2,862.98 = 1,916.39/x
  3. Step 3: Cross multiply
    1,920.03x = 2,862.98 × 1,916.39
  4. Step 4: Simplify right side
    1,920.03x = 5,486,562.35
  5. Step 5: Solve for x
    x = 5,486,562.35/1,920.03
  6. Step 6: Final answer
    x = 2,857.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.