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Finding the Fourth Proportional to 5,275.94, 7,280.92 and 2,918.18

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Solution

The fourth proportional to 5,275.94, 7,280.92 and 2,918.18 is: 4,027.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.94 : 7,280.92 = 2,918.18 : x
  2. Step 2: Convert to fraction form
    5,275.94/7,280.92 = 2,918.18/x
  3. Step 3: Cross multiply
    5,275.94x = 7,280.92 × 2,918.18
  4. Step 4: Simplify right side
    5,275.94x = 21,247,035.13
  5. Step 5: Solve for x
    x = 21,247,035.13/5,275.94
  6. Step 6: Final answer
    x = 4,027.16

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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.