Home / 8,740.31-13,099.50-6,884.09

Finding the Fourth Proportional to 8,740.31, 13,099.50 and 6,884.09

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Solution

The fourth proportional to 8,740.31, 13,099.50 and 6,884.09 is: 10,317.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740.31 : 13,099.50 = 6,884.09 : x
  2. Step 2: Convert to fraction form
    8,740.31/13,099.50 = 6,884.09/x
  3. Step 3: Cross multiply
    8,740.31x = 13,099.50 × 6,884.09
  4. Step 4: Simplify right side
    8,740.31x = 90,178,071.46
  5. Step 5: Solve for x
    x = 90,178,071.46/8,740.31
  6. Step 6: Final answer
    x = 10,317.50

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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.