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Finding the Fourth Proportional to 4,784.05, 7,178.10 and 2,590.21

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Solution

The fourth proportional to 4,784.05, 7,178.10 and 2,590.21 is: 3,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,784.05 : 7,178.10 = 2,590.21 : x
  2. Step 2: Convert to fraction form
    4,784.05/7,178.10 = 2,590.21/x
  3. Step 3: Cross multiply
    4,784.05x = 7,178.10 × 2,590.21
  4. Step 4: Simplify right side
    4,784.05x = 18,592,786.40
  5. Step 5: Solve for x
    x = 18,592,786.40/4,784.05
  6. Step 6: Final answer
    x = 3,886.41

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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.