Home / 5,447.91-8,173.09-1,985.13

Finding the Fourth Proportional to 5,447.91, 8,173.09 and 1,985.13

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Solution

The fourth proportional to 5,447.91, 8,173.09 and 1,985.13 is: 2,978.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,447.91 : 8,173.09 = 1,985.13 : x
  2. Step 2: Convert to fraction form
    5,447.91/8,173.09 = 1,985.13/x
  3. Step 3: Cross multiply
    5,447.91x = 8,173.09 × 1,985.13
  4. Step 4: Simplify right side
    5,447.91x = 16,224,646.15
  5. Step 5: Solve for x
    x = 16,224,646.15/5,447.91
  6. Step 6: Final answer
    x = 2,978.14

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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.