Home / 8,731.31-13,099.12-2,888.51

Finding the Fourth Proportional to 8,731.31, 13,099.12 and 2,888.51

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Solution

The fourth proportional to 8,731.31, 13,099.12 and 2,888.51 is: 4,333.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.31 : 13,099.12 = 2,888.51 : x
  2. Step 2: Convert to fraction form
    8,731.31/13,099.12 = 2,888.51/x
  3. Step 3: Cross multiply
    8,731.31x = 13,099.12 × 2,888.51
  4. Step 4: Simplify right side
    8,731.31x = 37,836,866.39
  5. Step 5: Solve for x
    x = 37,836,866.39/8,731.31
  6. Step 6: Final answer
    x = 4,333.47

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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.