Home / 7,931.81-11,885.36-2,998.76

Finding the Fourth Proportional to 7,931.81, 11,885.36 and 2,998.76

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Solution

The fourth proportional to 7,931.81, 11,885.36 and 2,998.76 is: 4,493.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.81 : 11,885.36 = 2,998.76 : x
  2. Step 2: Convert to fraction form
    7,931.81/11,885.36 = 2,998.76/x
  3. Step 3: Cross multiply
    7,931.81x = 11,885.36 × 2,998.76
  4. Step 4: Simplify right side
    7,931.81x = 35,641,267.73
  5. Step 5: Solve for x
    x = 35,641,267.73/7,931.81
  6. Step 6: Final answer
    x = 4,493.46

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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.