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Finding the Fourth Proportional to 5,280.93, 7,918.46 and 3,616.95

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Solution

The fourth proportional to 5,280.93, 7,918.46 and 3,616.95 is: 5,423.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.93 : 7,918.46 = 3,616.95 : x
  2. Step 2: Convert to fraction form
    5,280.93/7,918.46 = 3,616.95/x
  3. Step 3: Cross multiply
    5,280.93x = 7,918.46 × 3,616.95
  4. Step 4: Simplify right side
    5,280.93x = 28,640,655.81
  5. Step 5: Solve for x
    x = 28,640,655.81/5,280.93
  6. Step 6: Final answer
    x = 5,423.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.