Home / 5,687.05-8,530.98-1,988.86

Finding the Fourth Proportional to 5,687.05, 8,530.98 and 1,988.86

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Solution

The fourth proportional to 5,687.05, 8,530.98 and 1,988.86 is: 2,983.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.05 : 8,530.98 = 1,988.86 : x
  2. Step 2: Convert to fraction form
    5,687.05/8,530.98 = 1,988.86/x
  3. Step 3: Cross multiply
    5,687.05x = 8,530.98 × 1,988.86
  4. Step 4: Simplify right side
    5,687.05x = 16,966,924.88
  5. Step 5: Solve for x
    x = 16,966,924.88/5,687.05
  6. Step 6: Final answer
    x = 2,983.43

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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.