Home / 8,780.65-13,170.77-2,455.36

Finding the Fourth Proportional to 8,780.65, 13,170.77 and 2,455.36

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Solution

The fourth proportional to 8,780.65, 13,170.77 and 2,455.36 is: 3,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.65 : 13,170.77 = 2,455.36 : x
  2. Step 2: Convert to fraction form
    8,780.65/13,170.77 = 2,455.36/x
  3. Step 3: Cross multiply
    8,780.65x = 13,170.77 × 2,455.36
  4. Step 4: Simplify right side
    8,780.65x = 32,338,955.04
  5. Step 5: Solve for x
    x = 32,338,955.04/8,780.65
  6. Step 6: Final answer
    x = 3,682.98

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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.