Home / 5,416.88-8,125.31-1,521.28

Finding the Fourth Proportional to 5,416.88, 8,125.31 and 1,521.28

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Solution

The fourth proportional to 5,416.88, 8,125.31 and 1,521.28 is: 2,281.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.88 : 8,125.31 = 1,521.28 : x
  2. Step 2: Convert to fraction form
    5,416.88/8,125.31 = 1,521.28/x
  3. Step 3: Cross multiply
    5,416.88x = 8,125.31 × 1,521.28
  4. Step 4: Simplify right side
    5,416.88x = 12,360,885.56
  5. Step 5: Solve for x
    x = 12,360,885.56/5,416.88
  6. Step 6: Final answer
    x = 2,281.92

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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.