Home / 7,279.57-10,911.45-4,779.71

Finding the Fourth Proportional to 7,279.57, 10,911.45 and 4,779.71

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Solution

The fourth proportional to 7,279.57, 10,911.45 and 4,779.71 is: 7,164.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.57 : 10,911.45 = 4,779.71 : x
  2. Step 2: Convert to fraction form
    7,279.57/10,911.45 = 4,779.71/x
  3. Step 3: Cross multiply
    7,279.57x = 10,911.45 × 4,779.71
  4. Step 4: Simplify right side
    7,279.57x = 52,153,566.68
  5. Step 5: Solve for x
    x = 52,153,566.68/7,279.57
  6. Step 6: Final answer
    x = 7,164.37

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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.