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Finding the Fourth Proportional to 5,987.60, 8,981.40 and 5,440.40

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Solution

The fourth proportional to 5,987.60, 8,981.40 and 5,440.40 is: 8,160.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,987.60 : 8,981.40 = 5,440.40 : x
  2. Step 2: Convert to fraction form
    5,987.60/8,981.40 = 5,440.40/x
  3. Step 3: Cross multiply
    5,987.60x = 8,981.40 × 5,440.40
  4. Step 4: Simplify right side
    5,987.60x = 48,862,408.56
  5. Step 5: Solve for x
    x = 48,862,408.56/5,987.60
  6. Step 6: Final answer
    x = 8,160.60

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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.