Home / 8,989.29-12,406.14-5,454.99

Finding the Fourth Proportional to 8,989.29, 12,406.14 and 5,454.99

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Solution

The fourth proportional to 8,989.29, 12,406.14 and 5,454.99 is: 7,528.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.29 : 12,406.14 = 5,454.99 : x
  2. Step 2: Convert to fraction form
    8,989.29/12,406.14 = 5,454.99/x
  3. Step 3: Cross multiply
    8,989.29x = 12,406.14 × 5,454.99
  4. Step 4: Simplify right side
    8,989.29x = 67,675,369.64
  5. Step 5: Solve for x
    x = 67,675,369.64/8,989.29
  6. Step 6: Final answer
    x = 7,528.44

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1.5x scale

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.