Home / 9,217.12-12,721.44-6,421

Finding the Fourth Proportional to 9,217.12, 12,721.44 and 6,421

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Solution

The fourth proportional to 9,217.12, 12,721.44 and 6,421 is: 8,862.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,217.12 : 12,721.44 = 6,421 : x
  2. Step 2: Convert to fraction form
    9,217.12/12,721.44 = 6,421/x
  3. Step 3: Cross multiply
    9,217.12x = 12,721.44 × 6,421
  4. Step 4: Simplify right side
    9,217.12x = 81,684,366.24
  5. Step 5: Solve for x
    x = 81,684,366.24/9,217.12
  6. Step 6: Final answer
    x = 8,862.24

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.