Home / 3,780.40-5,212.73-2,585.58

Finding the Fourth Proportional to 3,780.40, 5,212.73 and 2,585.58

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Solution

The fourth proportional to 3,780.40, 5,212.73 and 2,585.58 is: 3,565.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.40 : 5,212.73 = 2,585.58 : x
  2. Step 2: Convert to fraction form
    3,780.40/5,212.73 = 2,585.58/x
  3. Step 3: Cross multiply
    3,780.40x = 5,212.73 × 2,585.58
  4. Step 4: Simplify right side
    3,780.40x = 13,477,913.74
  5. Step 5: Solve for x
    x = 13,477,913.74/3,780.40
  6. Step 6: Final answer
    x = 3,565.21

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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.