Home / 9,118.40-13,680.88-4,735.76

Finding the Fourth Proportional to 9,118.40, 13,680.88 and 4,735.76

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Solution

The fourth proportional to 9,118.40, 13,680.88 and 4,735.76 is: 7,105.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.40 : 13,680.88 = 4,735.76 : x
  2. Step 2: Convert to fraction form
    9,118.40/13,680.88 = 4,735.76/x
  3. Step 3: Cross multiply
    9,118.40x = 13,680.88 × 4,735.76
  4. Step 4: Simplify right side
    9,118.40x = 64,789,364.27
  5. Step 5: Solve for x
    x = 64,789,364.27/9,118.40
  6. Step 6: Final answer
    x = 7,105.34

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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.