Home / 5,639.89-7,782.76-3,087.58

Finding the Fourth Proportional to 5,639.89, 7,782.76 and 3,087.58

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Solution

The fourth proportional to 5,639.89, 7,782.76 and 3,087.58 is: 4,260.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.89 : 7,782.76 = 3,087.58 : x
  2. Step 2: Convert to fraction form
    5,639.89/7,782.76 = 3,087.58/x
  3. Step 3: Cross multiply
    5,639.89x = 7,782.76 × 3,087.58
  4. Step 4: Simplify right side
    5,639.89x = 24,029,839.77
  5. Step 5: Solve for x
    x = 24,029,839.77/5,639.89
  6. Step 6: Final answer
    x = 4,260.70

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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.