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Finding the Fourth Proportional to 8,607.24, 11,878.48 and 4,830.20

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Solution

The fourth proportional to 8,607.24, 11,878.48 and 4,830.20 is: 6,665.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.24 : 11,878.48 = 4,830.20 : x
  2. Step 2: Convert to fraction form
    8,607.24/11,878.48 = 4,830.20/x
  3. Step 3: Cross multiply
    8,607.24x = 11,878.48 × 4,830.20
  4. Step 4: Simplify right side
    8,607.24x = 57,375,434.10
  5. Step 5: Solve for x
    x = 57,375,434.10/8,607.24
  6. Step 6: Final answer
    x = 6,665.95

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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.