Home / 3,087.07-4,630.59-778.57

Finding the Fourth Proportional to 3,087.07, 4,630.59 and 778.57

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Solution

The fourth proportional to 3,087.07, 4,630.59 and 778.57 is: 1,167.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.07 : 4,630.59 = 778.57 : x
  2. Step 2: Convert to fraction form
    3,087.07/4,630.59 = 778.57/x
  3. Step 3: Cross multiply
    3,087.07x = 4,630.59 × 778.57
  4. Step 4: Simplify right side
    3,087.07x = 3,605,238.46
  5. Step 5: Solve for x
    x = 3,605,238.46/3,087.07
  6. Step 6: Final answer
    x = 1,167.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.