Home / 5,708.71-7,878.15-3,190.76

Finding the Fourth Proportional to 5,708.71, 7,878.15 and 3,190.76

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Solution

The fourth proportional to 5,708.71, 7,878.15 and 3,190.76 is: 4,403.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,708.71 : 7,878.15 = 3,190.76 : x
  2. Step 2: Convert to fraction form
    5,708.71/7,878.15 = 3,190.76/x
  3. Step 3: Cross multiply
    5,708.71x = 7,878.15 × 3,190.76
  4. Step 4: Simplify right side
    5,708.71x = 25,137,285.89
  5. Step 5: Solve for x
    x = 25,137,285.89/5,708.71
  6. Step 6: Final answer
    x = 4,403.32

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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.