Home / 7,358.40-11,005.20-5,608.80

Finding the Fourth Proportional to 7,358.40, 11,005.20 and 5,608.80

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Solution

The fourth proportional to 7,358.40, 11,005.20 and 5,608.80 is: 8,388.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,358.40 : 11,005.20 = 5,608.80 : x
  2. Step 2: Convert to fraction form
    7,358.40/11,005.20 = 5,608.80/x
  3. Step 3: Cross multiply
    7,358.40x = 11,005.20 × 5,608.80
  4. Step 4: Simplify right side
    7,358.40x = 61,725,965.76
  5. Step 5: Solve for x
    x = 61,725,965.76/7,358.40
  6. Step 6: Final answer
    x = 8,388.50

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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.