Home / 8,667.45-11,964.15-5,130.66

Finding the Fourth Proportional to 8,667.45, 11,964.15 and 5,130.66

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Solution

The fourth proportional to 8,667.45, 11,964.15 and 5,130.66 is: 7,082.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667.45 : 11,964.15 = 5,130.66 : x
  2. Step 2: Convert to fraction form
    8,667.45/11,964.15 = 5,130.66/x
  3. Step 3: Cross multiply
    8,667.45x = 11,964.15 × 5,130.66
  4. Step 4: Simplify right side
    8,667.45x = 61,383,985.84
  5. Step 5: Solve for x
    x = 61,383,985.84/8,667.45
  6. Step 6: Final answer
    x = 7,082.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.