Home / 8,140.40-11,233.14-5,491.40

Finding the Fourth Proportional to 8,140.40, 11,233.14 and 5,491.40

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Solution

The fourth proportional to 8,140.40, 11,233.14 and 5,491.40 is: 7,577.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.40 : 11,233.14 = 5,491.40 : x
  2. Step 2: Convert to fraction form
    8,140.40/11,233.14 = 5,491.40/x
  3. Step 3: Cross multiply
    8,140.40x = 11,233.14 × 5,491.40
  4. Step 4: Simplify right side
    8,140.40x = 61,685,665.00
  5. Step 5: Solve for x
    x = 61,685,665.00/8,140.40
  6. Step 6: Final answer
    x = 7,577.72

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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.