Home / 5,319.95-7,979.94-1,857.20

Finding the Fourth Proportional to 5,319.95, 7,979.94 and 1,857.20

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Solution

The fourth proportional to 5,319.95, 7,979.94 and 1,857.20 is: 2,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.95 : 7,979.94 = 1,857.20 : x
  2. Step 2: Convert to fraction form
    5,319.95/7,979.94 = 1,857.20/x
  3. Step 3: Cross multiply
    5,319.95x = 7,979.94 × 1,857.20
  4. Step 4: Simplify right side
    5,319.95x = 14,820,304.67
  5. Step 5: Solve for x
    x = 14,820,304.67/5,319.95
  6. Step 6: Final answer
    x = 2,785.80

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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.