Home / 2,319.68-3,479.52-2,280.80

Finding the Fourth Proportional to 2,319.68, 3,479.52 and 2,280.80

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Solution

The fourth proportional to 2,319.68, 3,479.52 and 2,280.80 is: 3,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.68 : 3,479.52 = 2,280.80 : x
  2. Step 2: Convert to fraction form
    2,319.68/3,479.52 = 2,280.80/x
  3. Step 3: Cross multiply
    2,319.68x = 3,479.52 × 2,280.80
  4. Step 4: Simplify right side
    2,319.68x = 7,936,089.22
  5. Step 5: Solve for x
    x = 7,936,089.22/2,319.68
  6. Step 6: Final answer
    x = 3,421.20

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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.