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Finding the Fourth Proportional to 5,275.99, 7,280.67 and 2,918.17

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Solution

The fourth proportional to 5,275.99, 7,280.67 and 2,918.17 is: 4,026.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.99 : 7,280.67 = 2,918.17 : x
  2. Step 2: Convert to fraction form
    5,275.99/7,280.67 = 2,918.17/x
  3. Step 3: Cross multiply
    5,275.99x = 7,280.67 × 2,918.17
  4. Step 4: Simplify right side
    5,275.99x = 21,246,232.77
  5. Step 5: Solve for x
    x = 21,246,232.77/5,275.99
  6. Step 6: Final answer
    x = 4,026.97

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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.