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Finding the Fourth Proportional to 28,575.38, 42,863.08 and 7,798.88

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Solution

The fourth proportional to 28,575.38, 42,863.08 and 7,798.88 is: 11,698.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,575.38 : 42,863.08 = 7,798.88 : x
  2. Step 2: Convert to fraction form
    28,575.38/42,863.08 = 7,798.88/x
  3. Step 3: Cross multiply
    28,575.38x = 42,863.08 × 7,798.88
  4. Step 4: Simplify right side
    28,575.38x = 334,284,017.35
  5. Step 5: Solve for x
    x = 334,284,017.35/28,575.38
  6. Step 6: Final answer
    x = 11,698.32

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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.