Home / 8,376.21-11,555.56-5,390.96

Finding the Fourth Proportional to 8,376.21, 11,555.56 and 5,390.96

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Solution

The fourth proportional to 8,376.21, 11,555.56 and 5,390.96 is: 7,437.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,376.21 : 11,555.56 = 5,390.96 : x
  2. Step 2: Convert to fraction form
    8,376.21/11,555.56 = 5,390.96/x
  3. Step 3: Cross multiply
    8,376.21x = 11,555.56 × 5,390.96
  4. Step 4: Simplify right side
    8,376.21x = 62,295,510.70
  5. Step 5: Solve for x
    x = 62,295,510.70/8,376.21
  6. Step 6: Final answer
    x = 7,437.20

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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.