Home / 9,864.40-13,611.36-5,885.68

Finding the Fourth Proportional to 9,864.40, 13,611.36 and 5,885.68

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Solution

The fourth proportional to 9,864.40, 13,611.36 and 5,885.68 is: 8,121.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,864.40 : 13,611.36 = 5,885.68 : x
  2. Step 2: Convert to fraction form
    9,864.40/13,611.36 = 5,885.68/x
  3. Step 3: Cross multiply
    9,864.40x = 13,611.36 × 5,885.68
  4. Step 4: Simplify right side
    9,864.40x = 80,112,109.32
  5. Step 5: Solve for x
    x = 80,112,109.32/9,864.40
  6. Step 6: Final answer
    x = 8,121.34

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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.