Home / 7,819.32-11,712.66-4,689.40

Finding the Fourth Proportional to 7,819.32, 11,712.66 and 4,689.40

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Solution

The fourth proportional to 7,819.32, 11,712.66 and 4,689.40 is: 7,024.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.32 : 11,712.66 = 4,689.40 : x
  2. Step 2: Convert to fraction form
    7,819.32/11,712.66 = 4,689.40/x
  3. Step 3: Cross multiply
    7,819.32x = 11,712.66 × 4,689.40
  4. Step 4: Simplify right side
    7,819.32x = 54,925,347.80
  5. Step 5: Solve for x
    x = 54,925,347.80/7,819.32
  6. Step 6: Final answer
    x = 7,024.31

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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.