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Finding the Fourth Proportional to 5,989.91, 8,984.96 and 1,987.31

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Solution

The fourth proportional to 5,989.91, 8,984.96 and 1,987.31 is: 2,981.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,989.91 : 8,984.96 = 1,987.31 : x
  2. Step 2: Convert to fraction form
    5,989.91/8,984.96 = 1,987.31/x
  3. Step 3: Cross multiply
    5,989.91x = 8,984.96 × 1,987.31
  4. Step 4: Simplify right side
    5,989.91x = 17,855,928.29
  5. Step 5: Solve for x
    x = 17,855,928.29/5,989.91
  6. Step 6: Final answer
    x = 2,981.00

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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.