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Finding the Fourth Proportional to 5,275.53, 7,279.77 and 2,917.65

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Solution

The fourth proportional to 5,275.53, 7,279.77 and 2,917.65 is: 4,026.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.53 : 7,279.77 = 2,917.65 : x
  2. Step 2: Convert to fraction form
    5,275.53/7,279.77 = 2,917.65/x
  3. Step 3: Cross multiply
    5,275.53x = 7,279.77 × 2,917.65
  4. Step 4: Simplify right side
    5,275.53x = 21,239,820.94
  5. Step 5: Solve for x
    x = 21,239,820.94/5,275.53
  6. Step 6: Final answer
    x = 4,026.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.