Home / 6,421.64-8,859.24-5,090

Finding the Fourth Proportional to 6,421.64, 8,859.24 and 5,090

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Solution

The fourth proportional to 6,421.64, 8,859.24 and 5,090 is: 7,022.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.64 : 8,859.24 = 5,090 : x
  2. Step 2: Convert to fraction form
    6,421.64/8,859.24 = 5,090/x
  3. Step 3: Cross multiply
    6,421.64x = 8,859.24 × 5,090
  4. Step 4: Simplify right side
    6,421.64x = 45,093,531.60
  5. Step 5: Solve for x
    x = 45,093,531.60/6,421.64
  6. Step 6: Final answer
    x = 7,022.12

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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.