Home / 8,262.80-12,377.40-5,133.20

Finding the Fourth Proportional to 8,262.80, 12,377.40 and 5,133.20

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Solution

The fourth proportional to 8,262.80, 12,377.40 and 5,133.20 is: 7,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,262.80 : 12,377.40 = 5,133.20 : x
  2. Step 2: Convert to fraction form
    8,262.80/12,377.40 = 5,133.20/x
  3. Step 3: Cross multiply
    8,262.80x = 12,377.40 × 5,133.20
  4. Step 4: Simplify right side
    8,262.80x = 63,535,669.68
  5. Step 5: Solve for x
    x = 63,535,669.68/8,262.80
  6. Step 6: Final answer
    x = 7,689.36

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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.