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Finding the Fourth Proportional to 4,987.60, 7,479.60 and 2,024.80

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Solution

The fourth proportional to 4,987.60, 7,479.60 and 2,024.80 is: 3,036.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.60 : 7,479.60 = 2,024.80 : x
  2. Step 2: Convert to fraction form
    4,987.60/7,479.60 = 2,024.80/x
  3. Step 3: Cross multiply
    4,987.60x = 7,479.60 × 2,024.80
  4. Step 4: Simplify right side
    4,987.60x = 15,144,694.08
  5. Step 5: Solve for x
    x = 15,144,694.08/4,987.60
  6. Step 6: Final answer
    x = 3,036.47

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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.