Home / 7,125.60-10,686.78-3,425.52

Finding the Fourth Proportional to 7,125.60, 10,686.78 and 3,425.52

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Solution

The fourth proportional to 7,125.60, 10,686.78 and 3,425.52 is: 5,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.60 : 10,686.78 = 3,425.52 : x
  2. Step 2: Convert to fraction form
    7,125.60/10,686.78 = 3,425.52/x
  3. Step 3: Cross multiply
    7,125.60x = 10,686.78 × 3,425.52
  4. Step 4: Simplify right side
    7,125.60x = 36,607,778.63
  5. Step 5: Solve for x
    x = 36,607,778.63/7,125.60
  6. Step 6: Final answer
    x = 5,137.50

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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.