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Finding the Fourth Proportional to 7,810, 10,779.08 and 4,499.92

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Solution

The fourth proportional to 7,810, 10,779.08 and 4,499.92 is: 6,210.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,810 : 10,779.08 = 4,499.92 : x
  2. Step 2: Convert to fraction form
    7,810/10,779.08 = 4,499.92/x
  3. Step 3: Cross multiply
    7,810x = 10,779.08 × 4,499.92
  4. Step 4: Simplify right side
    7,810x = 48,504,997.67
  5. Step 5: Solve for x
    x = 48,504,997.67/7,810
  6. Step 6: Final answer
    x = 6,210.63

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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.