Home / 5,421.88-8,130.12-2,648.71

Finding the Fourth Proportional to 5,421.88, 8,130.12 and 2,648.71

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Solution

The fourth proportional to 5,421.88, 8,130.12 and 2,648.71 is: 3,971.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.88 : 8,130.12 = 2,648.71 : x
  2. Step 2: Convert to fraction form
    5,421.88/8,130.12 = 2,648.71/x
  3. Step 3: Cross multiply
    5,421.88x = 8,130.12 × 2,648.71
  4. Step 4: Simplify right side
    5,421.88x = 21,534,330.15
  5. Step 5: Solve for x
    x = 21,534,330.15/5,421.88
  6. Step 6: Final answer
    x = 3,971.75

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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.