Home / 8,788.20-12,127.71-4,809.34

Finding the Fourth Proportional to 8,788.20, 12,127.71 and 4,809.34

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Solution

The fourth proportional to 8,788.20, 12,127.71 and 4,809.34 is: 6,636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.20 : 12,127.71 = 4,809.34 : x
  2. Step 2: Convert to fraction form
    8,788.20/12,127.71 = 4,809.34/x
  3. Step 3: Cross multiply
    8,788.20x = 12,127.71 × 4,809.34
  4. Step 4: Simplify right side
    8,788.20x = 58,326,280.81
  5. Step 5: Solve for x
    x = 58,326,280.81/8,788.20
  6. Step 6: Final answer
    x = 6,636.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.