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Finding the Fourth Proportional to 7,810.95, 10,778.99 and 4,453.65

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Solution

The fourth proportional to 7,810.95, 10,778.99 and 4,453.65 is: 6,145.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,810.95 : 10,778.99 = 4,453.65 : x
  2. Step 2: Convert to fraction form
    7,810.95/10,778.99 = 4,453.65/x
  3. Step 3: Cross multiply
    7,810.95x = 10,778.99 × 4,453.65
  4. Step 4: Simplify right side
    7,810.95x = 48,005,848.81
  5. Step 5: Solve for x
    x = 48,005,848.81/7,810.95
  6. Step 6: Final answer
    x = 6,145.97

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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.