Home / 5,090.81-7,670.90-4,186.62

Finding the Fourth Proportional to 5,090.81, 7,670.90 and 4,186.62

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Solution

The fourth proportional to 5,090.81, 7,670.90 and 4,186.62 is: 6,308.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090.81 : 7,670.90 = 4,186.62 : x
  2. Step 2: Convert to fraction form
    5,090.81/7,670.90 = 4,186.62/x
  3. Step 3: Cross multiply
    5,090.81x = 7,670.90 × 4,186.62
  4. Step 4: Simplify right side
    5,090.81x = 32,115,143.36
  5. Step 5: Solve for x
    x = 32,115,143.36/5,090.81
  6. Step 6: Final answer
    x = 6,308.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.