Home / 7,648.32-11,470.40-2,100.35

Finding the Fourth Proportional to 7,648.32, 11,470.40 and 2,100.35

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Solution

The fourth proportional to 7,648.32, 11,470.40 and 2,100.35 is: 3,149.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,648.32 : 11,470.40 = 2,100.35 : x
  2. Step 2: Convert to fraction form
    7,648.32/11,470.40 = 2,100.35/x
  3. Step 3: Cross multiply
    7,648.32x = 11,470.40 × 2,100.35
  4. Step 4: Simplify right side
    7,648.32x = 24,091,854.64
  5. Step 5: Solve for x
    x = 24,091,854.64/7,648.32
  6. Step 6: Final answer
    x = 3,149.95

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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.