Home / 5,279.34-7,920.48-1,816.86

Finding the Fourth Proportional to 5,279.34, 7,920.48 and 1,816.86

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Solution

The fourth proportional to 5,279.34, 7,920.48 and 1,816.86 is: 2,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.34 : 7,920.48 = 1,816.86 : x
  2. Step 2: Convert to fraction form
    5,279.34/7,920.48 = 1,816.86/x
  3. Step 3: Cross multiply
    5,279.34x = 7,920.48 × 1,816.86
  4. Step 4: Simplify right side
    5,279.34x = 14,390,403.29
  5. Step 5: Solve for x
    x = 14,390,403.29/5,279.34
  6. Step 6: Final answer
    x = 2,725.80

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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.