Home / 5,279-7,916.86-1,768.18

Finding the Fourth Proportional to 5,279, 7,916.86 and 1,768.18

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Solution

The fourth proportional to 5,279, 7,916.86 and 1,768.18 is: 2,651.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279 : 7,916.86 = 1,768.18 : x
  2. Step 2: Convert to fraction form
    5,279/7,916.86 = 1,768.18/x
  3. Step 3: Cross multiply
    5,279x = 7,916.86 × 1,768.18
  4. Step 4: Simplify right side
    5,279x = 13,998,433.51
  5. Step 5: Solve for x
    x = 13,998,433.51/5,279
  6. Step 6: Final answer
    x = 2,651.72

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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.