Home / 5,279.90-7,919.16-2,508.35

Finding the Fourth Proportional to 5,279.90, 7,919.16 and 2,508.35

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Solution

The fourth proportional to 5,279.90, 7,919.16 and 2,508.35 is: 3,762.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.90 : 7,919.16 = 2,508.35 : x
  2. Step 2: Convert to fraction form
    5,279.90/7,919.16 = 2,508.35/x
  3. Step 3: Cross multiply
    5,279.90x = 7,919.16 × 2,508.35
  4. Step 4: Simplify right side
    5,279.90x = 19,863,985.39
  5. Step 5: Solve for x
    x = 19,863,985.39/5,279.90
  6. Step 6: Final answer
    x = 3,762.19

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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.