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Finding the Fourth Proportional to 7,618.72, 10,509.84 and 4,819.36

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Solution

The fourth proportional to 7,618.72, 10,509.84 and 4,819.36 is: 6,648.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,618.72 : 10,509.84 = 4,819.36 : x
  2. Step 2: Convert to fraction form
    7,618.72/10,509.84 = 4,819.36/x
  3. Step 3: Cross multiply
    7,618.72x = 10,509.84 × 4,819.36
  4. Step 4: Simplify right side
    7,618.72x = 50,650,702.50
  5. Step 5: Solve for x
    x = 50,650,702.50/7,618.72
  6. Step 6: Final answer
    x = 6,648.19

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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.