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Finding the Fourth Proportional to 7,955, 10,979.11 and 5,724.26

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Solution

The fourth proportional to 7,955, 10,979.11 and 5,724.26 is: 7,900.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955 : 10,979.11 = 5,724.26 : x
  2. Step 2: Convert to fraction form
    7,955/10,979.11 = 5,724.26/x
  3. Step 3: Cross multiply
    7,955x = 10,979.11 × 5,724.26
  4. Step 4: Simplify right side
    7,955x = 62,847,280.21
  5. Step 5: Solve for x
    x = 62,847,280.21/7,955
  6. Step 6: Final answer
    x = 7,900.35

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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.