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Finding the Fourth Proportional to 5,276.69, 7,280.97 and 2,918.38

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Solution

The fourth proportional to 5,276.69, 7,280.97 and 2,918.38 is: 4,026.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.69 : 7,280.97 = 2,918.38 : x
  2. Step 2: Convert to fraction form
    5,276.69/7,280.97 = 2,918.38/x
  3. Step 3: Cross multiply
    5,276.69x = 7,280.97 × 2,918.38
  4. Step 4: Simplify right side
    5,276.69x = 21,248,637.23
  5. Step 5: Solve for x
    x = 21,248,637.23/5,276.69
  6. Step 6: Final answer
    x = 4,026.89

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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.