Home / 2,829.57-3,904.80-1,587.57

Finding the Fourth Proportional to 2,829.57, 3,904.80 and 1,587.57

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Solution

The fourth proportional to 2,829.57, 3,904.80 and 1,587.57 is: 2,190.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.57 : 3,904.80 = 1,587.57 : x
  2. Step 2: Convert to fraction form
    2,829.57/3,904.80 = 1,587.57/x
  3. Step 3: Cross multiply
    2,829.57x = 3,904.80 × 1,587.57
  4. Step 4: Simplify right side
    2,829.57x = 6,199,143.34
  5. Step 5: Solve for x
    x = 6,199,143.34/2,829.57
  6. Step 6: Final answer
    x = 2,190.84

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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.