Home / 9,116.40-13,669.20-4,742.40

Finding the Fourth Proportional to 9,116.40, 13,669.20 and 4,742.40

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Solution

The fourth proportional to 9,116.40, 13,669.20 and 4,742.40 is: 7,110.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,116.40 : 13,669.20 = 4,742.40 : x
  2. Step 2: Convert to fraction form
    9,116.40/13,669.20 = 4,742.40/x
  3. Step 3: Cross multiply
    9,116.40x = 13,669.20 × 4,742.40
  4. Step 4: Simplify right side
    9,116.40x = 64,824,814.08
  5. Step 5: Solve for x
    x = 64,824,814.08/9,116.40
  6. Step 6: Final answer
    x = 7,110.79

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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.