Home / 7,449.60-11,176.80-4,987.20

Finding the Fourth Proportional to 7,449.60, 11,176.80 and 4,987.20

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Solution

The fourth proportional to 7,449.60, 11,176.80 and 4,987.20 is: 7,482.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,449.60 : 11,176.80 = 4,987.20 : x
  2. Step 2: Convert to fraction form
    7,449.60/11,176.80 = 4,987.20/x
  3. Step 3: Cross multiply
    7,449.60x = 11,176.80 × 4,987.20
  4. Step 4: Simplify right side
    7,449.60x = 55,740,936.96
  5. Step 5: Solve for x
    x = 55,740,936.96/7,449.60
  6. Step 6: Final answer
    x = 7,482.41

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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.