Home / 7,468.40-11,240.60-5,628.80

Finding the Fourth Proportional to 7,468.40, 11,240.60 and 5,628.80

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Solution

The fourth proportional to 7,468.40, 11,240.60 and 5,628.80 is: 8,471.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,468.40 : 11,240.60 = 5,628.80 : x
  2. Step 2: Convert to fraction form
    7,468.40/11,240.60 = 5,628.80/x
  3. Step 3: Cross multiply
    7,468.40x = 11,240.60 × 5,628.80
  4. Step 4: Simplify right side
    7,468.40x = 63,271,089.28
  5. Step 5: Solve for x
    x = 63,271,089.28/7,468.40
  6. Step 6: Final answer
    x = 8,471.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.