Home / 8,621.76-11,886.68-5,632.40

Finding the Fourth Proportional to 8,621.76, 11,886.68 and 5,632.40

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Solution

The fourth proportional to 8,621.76, 11,886.68 and 5,632.40 is: 7,765.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.76 : 11,886.68 = 5,632.40 : x
  2. Step 2: Convert to fraction form
    8,621.76/11,886.68 = 5,632.40/x
  3. Step 3: Cross multiply
    8,621.76x = 11,886.68 × 5,632.40
  4. Step 4: Simplify right side
    8,621.76x = 66,950,536.43
  5. Step 5: Solve for x
    x = 66,950,536.43/8,621.76
  6. Step 6: Final answer
    x = 7,765.30

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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.