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Finding the Fourth Proportional to 7,875, 10,849.01 and 5,480.85

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Solution

The fourth proportional to 7,875, 10,849.01 and 5,480.85 is: 7,550.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875 : 10,849.01 = 5,480.85 : x
  2. Step 2: Convert to fraction form
    7,875/10,849.01 = 5,480.85/x
  3. Step 3: Cross multiply
    7,875x = 10,849.01 × 5,480.85
  4. Step 4: Simplify right side
    7,875x = 59,461,769.05
  5. Step 5: Solve for x
    x = 59,461,769.05/7,875
  6. Step 6: Final answer
    x = 7,550.70

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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.