Home / 3,916.08-5,874.39-1,320.84

Finding the Fourth Proportional to 3,916.08, 5,874.39 and 1,320.84

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Solution

The fourth proportional to 3,916.08, 5,874.39 and 1,320.84 is: 1,981.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.08 : 5,874.39 = 1,320.84 : x
  2. Step 2: Convert to fraction form
    3,916.08/5,874.39 = 1,320.84/x
  3. Step 3: Cross multiply
    3,916.08x = 5,874.39 × 1,320.84
  4. Step 4: Simplify right side
    3,916.08x = 7,759,129.29
  5. Step 5: Solve for x
    x = 7,759,129.29/3,916.08
  6. Step 6: Final answer
    x = 1,981.35

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1.5x scale

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.