Home / 5,319.10-7,979.06-1,621.63

Finding the Fourth Proportional to 5,319.10, 7,979.06 and 1,621.63

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Solution

The fourth proportional to 5,319.10, 7,979.06 and 1,621.63 is: 2,432.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.10 : 7,979.06 = 1,621.63 : x
  2. Step 2: Convert to fraction form
    5,319.10/7,979.06 = 1,621.63/x
  3. Step 3: Cross multiply
    5,319.10x = 7,979.06 × 1,621.63
  4. Step 4: Simplify right side
    5,319.10x = 12,939,083.07
  5. Step 5: Solve for x
    x = 12,939,083.07/5,319.10
  6. Step 6: Final answer
    x = 2,432.57

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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.