Home / 3,916.88-5,876.12-1,319.76

Finding the Fourth Proportional to 3,916.88, 5,876.12 and 1,319.76

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Solution

The fourth proportional to 3,916.88, 5,876.12 and 1,319.76 is: 1,979.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.88 : 5,876.12 = 1,319.76 : x
  2. Step 2: Convert to fraction form
    3,916.88/5,876.12 = 1,319.76/x
  3. Step 3: Cross multiply
    3,916.88x = 5,876.12 × 1,319.76
  4. Step 4: Simplify right side
    3,916.88x = 7,755,068.13
  5. Step 5: Solve for x
    x = 7,755,068.13/3,916.88
  6. Step 6: Final answer
    x = 1,979.91

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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.