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Finding the Fourth Proportional to 7,160.77, 9,871.68 and 5,899.87

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Solution

The fourth proportional to 7,160.77, 9,871.68 and 5,899.87 is: 8,133.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,160.77 : 9,871.68 = 5,899.87 : x
  2. Step 2: Convert to fraction form
    7,160.77/9,871.68 = 5,899.87/x
  3. Step 3: Cross multiply
    7,160.77x = 9,871.68 × 5,899.87
  4. Step 4: Simplify right side
    7,160.77x = 58,241,628.68
  5. Step 5: Solve for x
    x = 58,241,628.68/7,160.77
  6. Step 6: Final answer
    x = 8,133.43

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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.