Home / 5,445.50-8,172.36-3,988.44

Finding the Fourth Proportional to 5,445.50, 8,172.36 and 3,988.44

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Solution

The fourth proportional to 5,445.50, 8,172.36 and 3,988.44 is: 5,985.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,445.50 : 8,172.36 = 3,988.44 : x
  2. Step 2: Convert to fraction form
    5,445.50/8,172.36 = 3,988.44/x
  3. Step 3: Cross multiply
    5,445.50x = 8,172.36 × 3,988.44
  4. Step 4: Simplify right side
    5,445.50x = 32,594,967.52
  5. Step 5: Solve for x
    x = 32,594,967.52/5,445.50
  6. Step 6: Final answer
    x = 5,985.68

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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.