Home / 7,851.60-11,775.96-3,171.36

Finding the Fourth Proportional to 7,851.60, 11,775.96 and 3,171.36

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Solution

The fourth proportional to 7,851.60, 11,775.96 and 3,171.36 is: 4,756.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.60 : 11,775.96 = 3,171.36 : x
  2. Step 2: Convert to fraction form
    7,851.60/11,775.96 = 3,171.36/x
  3. Step 3: Cross multiply
    7,851.60x = 11,775.96 × 3,171.36
  4. Step 4: Simplify right side
    7,851.60x = 37,345,808.51
  5. Step 5: Solve for x
    x = 37,345,808.51/7,851.60
  6. Step 6: Final answer
    x = 4,756.46

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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.