Home / 4,812.80-7,221.40-2,040.08

Finding the Fourth Proportional to 4,812.80, 7,221.40 and 2,040.08

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Solution

The fourth proportional to 4,812.80, 7,221.40 and 2,040.08 is: 3,061.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.80 : 7,221.40 = 2,040.08 : x
  2. Step 2: Convert to fraction form
    4,812.80/7,221.40 = 2,040.08/x
  3. Step 3: Cross multiply
    4,812.80x = 7,221.40 × 2,040.08
  4. Step 4: Simplify right side
    4,812.80x = 14,732,233.71
  5. Step 5: Solve for x
    x = 14,732,233.71/4,812.80
  6. Step 6: Final answer
    x = 3,061.05

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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.