Home / 7,931.70-11,898.64-2,667.12

Finding the Fourth Proportional to 7,931.70, 11,898.64 and 2,667.12

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Solution

The fourth proportional to 7,931.70, 11,898.64 and 2,667.12 is: 4,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.70 : 11,898.64 = 2,667.12 : x
  2. Step 2: Convert to fraction form
    7,931.70/11,898.64 = 2,667.12/x
  3. Step 3: Cross multiply
    7,931.70x = 11,898.64 × 2,667.12
  4. Step 4: Simplify right side
    7,931.70x = 31,735,107.38
  5. Step 5: Solve for x
    x = 31,735,107.38/7,931.70
  6. Step 6: Final answer
    x = 4,001.05

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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.