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Finding the Fourth Proportional to 5,275.49, 7,279.98 and 2,917.67

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Solution

The fourth proportional to 5,275.49, 7,279.98 and 2,917.67 is: 4,026.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.49 : 7,279.98 = 2,917.67 : x
  2. Step 2: Convert to fraction form
    5,275.49/7,279.98 = 2,917.67/x
  3. Step 3: Cross multiply
    5,275.49x = 7,279.98 × 2,917.67
  4. Step 4: Simplify right side
    5,275.49x = 21,240,579.25
  5. Step 5: Solve for x
    x = 21,240,579.25/5,275.49
  6. Step 6: Final answer
    x = 4,026.28

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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.