Home / 5,689.05-8,535.08-1,991.28

Finding the Fourth Proportional to 5,689.05, 8,535.08 and 1,991.28

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Solution

The fourth proportional to 5,689.05, 8,535.08 and 1,991.28 is: 2,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,689.05 : 8,535.08 = 1,991.28 : x
  2. Step 2: Convert to fraction form
    5,689.05/8,535.08 = 1,991.28/x
  3. Step 3: Cross multiply
    5,689.05x = 8,535.08 × 1,991.28
  4. Step 4: Simplify right side
    5,689.05x = 16,995,724.15
  5. Step 5: Solve for x
    x = 16,995,724.15/5,689.05
  6. Step 6: Final answer
    x = 2,987.45

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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.