Home / 10,587.20-15,880.80-2,796.80

Finding the Fourth Proportional to 10,587.20, 15,880.80 and 2,796.80

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Solution

The fourth proportional to 10,587.20, 15,880.80 and 2,796.80 is: 4,195.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,587.20 : 15,880.80 = 2,796.80 : x
  2. Step 2: Convert to fraction form
    10,587.20/15,880.80 = 2,796.80/x
  3. Step 3: Cross multiply
    10,587.20x = 15,880.80 × 2,796.80
  4. Step 4: Simplify right side
    10,587.20x = 44,415,421.44
  5. Step 5: Solve for x
    x = 44,415,421.44/10,587.20
  6. Step 6: Final answer
    x = 4,195.20

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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.