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Finding the Fourth Proportional to 7,616.78, 10,511.07 and 4,259.55

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Solution

The fourth proportional to 7,616.78, 10,511.07 and 4,259.55 is: 5,878.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,616.78 : 10,511.07 = 4,259.55 : x
  2. Step 2: Convert to fraction form
    7,616.78/10,511.07 = 4,259.55/x
  3. Step 3: Cross multiply
    7,616.78x = 10,511.07 × 4,259.55
  4. Step 4: Simplify right side
    7,616.78x = 44,772,428.22
  5. Step 5: Solve for x
    x = 44,772,428.22/7,616.78
  6. Step 6: Final answer
    x = 5,878.13

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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.