Home / 6,875.60-9,487.58-3,891.38

Finding the Fourth Proportional to 6,875.60, 9,487.58 and 3,891.38

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Solution

The fourth proportional to 6,875.60, 9,487.58 and 3,891.38 is: 5,369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,875.60 : 9,487.58 = 3,891.38 : x
  2. Step 2: Convert to fraction form
    6,875.60/9,487.58 = 3,891.38/x
  3. Step 3: Cross multiply
    6,875.60x = 9,487.58 × 3,891.38
  4. Step 4: Simplify right side
    6,875.60x = 36,919,712.17
  5. Step 5: Solve for x
    x = 36,919,712.17/6,875.60
  6. Step 6: Final answer
    x = 5,369.68

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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.