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Finding the Fourth Proportional to 7,087.05, 9,779.94 and 3,943.17

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Solution

The fourth proportional to 7,087.05, 9,779.94 and 3,943.17 is: 5,441.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,087.05 : 9,779.94 = 3,943.17 : x
  2. Step 2: Convert to fraction form
    7,087.05/9,779.94 = 3,943.17/x
  3. Step 3: Cross multiply
    7,087.05x = 9,779.94 × 3,943.17
  4. Step 4: Simplify right side
    7,087.05x = 38,563,966.01
  5. Step 5: Solve for x
    x = 38,563,966.01/7,087.05
  6. Step 6: Final answer
    x = 5,441.47

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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.