Home / 8,326.40-12,490.12-2,780.24

Finding the Fourth Proportional to 8,326.40, 12,490.12 and 2,780.24

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Solution

The fourth proportional to 8,326.40, 12,490.12 and 2,780.24 is: 4,170.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.40 : 12,490.12 = 2,780.24 : x
  2. Step 2: Convert to fraction form
    8,326.40/12,490.12 = 2,780.24/x
  3. Step 3: Cross multiply
    8,326.40x = 12,490.12 × 2,780.24
  4. Step 4: Simplify right side
    8,326.40x = 34,725,531.23
  5. Step 5: Solve for x
    x = 34,725,531.23/8,326.40
  6. Step 6: Final answer
    x = 4,170.53

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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.