Home / 2,829.20-3,904.26-1,587.20

Finding the Fourth Proportional to 2,829.20, 3,904.26 and 1,587.20

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Solution

The fourth proportional to 2,829.20, 3,904.26 and 1,587.20 is: 2,190.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.20 : 3,904.26 = 1,587.20 : x
  2. Step 2: Convert to fraction form
    2,829.20/3,904.26 = 1,587.20/x
  3. Step 3: Cross multiply
    2,829.20x = 3,904.26 × 1,587.20
  4. Step 4: Simplify right side
    2,829.20x = 6,196,841.47
  5. Step 5: Solve for x
    x = 6,196,841.47/2,829.20
  6. Step 6: Final answer
    x = 2,190.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.