Home / 8,820.64-12,173.45-5,636.87

Finding the Fourth Proportional to 8,820.64, 12,173.45 and 5,636.87

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Solution

The fourth proportional to 8,820.64, 12,173.45 and 5,636.87 is: 7,779.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,820.64 : 12,173.45 = 5,636.87 : x
  2. Step 2: Convert to fraction form
    8,820.64/12,173.45 = 5,636.87/x
  3. Step 3: Cross multiply
    8,820.64x = 12,173.45 × 5,636.87
  4. Step 4: Simplify right side
    8,820.64x = 68,620,066.05
  5. Step 5: Solve for x
    x = 68,620,066.05/8,820.64
  6. Step 6: Final answer
    x = 7,779.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.