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Finding the Fourth Proportional to 5,275.69, 7,280.53 and 2,917.82

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Solution

The fourth proportional to 5,275.69, 7,280.53 and 2,917.82 is: 4,026.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.69 : 7,280.53 = 2,917.82 : x
  2. Step 2: Convert to fraction form
    5,275.69/7,280.53 = 2,917.82/x
  3. Step 3: Cross multiply
    5,275.69x = 7,280.53 × 2,917.82
  4. Step 4: Simplify right side
    5,275.69x = 21,243,286.95
  5. Step 5: Solve for x
    x = 21,243,286.95/5,275.69
  6. Step 6: Final answer
    x = 4,026.64

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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.