Home / 5,666.19-7,820.47-3,620.79

Finding the Fourth Proportional to 5,666.19, 7,820.47 and 3,620.79

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Solution

The fourth proportional to 5,666.19, 7,820.47 and 3,620.79 is: 4,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,666.19 : 7,820.47 = 3,620.79 : x
  2. Step 2: Convert to fraction form
    5,666.19/7,820.47 = 3,620.79/x
  3. Step 3: Cross multiply
    5,666.19x = 7,820.47 × 3,620.79
  4. Step 4: Simplify right side
    5,666.19x = 28,316,241.19
  5. Step 5: Solve for x
    x = 28,316,241.19/5,666.19
  6. Step 6: Final answer
    x = 4,997.40

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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.