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Finding the Fourth Proportional to 5,886.19, 8,829.69 and 1,990.90

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Solution

The fourth proportional to 5,886.19, 8,829.69 and 1,990.90 is: 2,986.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,886.19 : 8,829.69 = 1,990.90 : x
  2. Step 2: Convert to fraction form
    5,886.19/8,829.69 = 1,990.90/x
  3. Step 3: Cross multiply
    5,886.19x = 8,829.69 × 1,990.90
  4. Step 4: Simplify right side
    5,886.19x = 17,579,029.82
  5. Step 5: Solve for x
    x = 17,579,029.82/5,886.19
  6. Step 6: Final answer
    x = 2,986.49

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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.