Home / 8,668.20-12,980.16-4,768.32

Finding the Fourth Proportional to 8,668.20, 12,980.16 and 4,768.32

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Solution

The fourth proportional to 8,668.20, 12,980.16 and 4,768.32 is: 7,140.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.20 : 12,980.16 = 4,768.32 : x
  2. Step 2: Convert to fraction form
    8,668.20/12,980.16 = 4,768.32/x
  3. Step 3: Cross multiply
    8,668.20x = 12,980.16 × 4,768.32
  4. Step 4: Simplify right side
    8,668.20x = 61,893,556.53
  5. Step 5: Solve for x
    x = 61,893,556.53/8,668.20
  6. Step 6: Final answer
    x = 7,140.30

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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.