Home / 5,630.81-7,770.51-3,078.57

Finding the Fourth Proportional to 5,630.81, 7,770.51 and 3,078.57

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Solution

The fourth proportional to 5,630.81, 7,770.51 and 3,078.57 is: 4,248.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,630.81 : 7,770.51 = 3,078.57 : x
  2. Step 2: Convert to fraction form
    5,630.81/7,770.51 = 3,078.57/x
  3. Step 3: Cross multiply
    5,630.81x = 7,770.51 × 3,078.57
  4. Step 4: Simplify right side
    5,630.81x = 23,922,058.97
  5. Step 5: Solve for x
    x = 23,922,058.97/5,630.81
  6. Step 6: Final answer
    x = 4,248.43

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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.