Home / 2,988.28-4,124.01-1,809.46

Finding the Fourth Proportional to 2,988.28, 4,124.01 and 1,809.46

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Solution

The fourth proportional to 2,988.28, 4,124.01 and 1,809.46 is: 2,497.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.28 : 4,124.01 = 1,809.46 : x
  2. Step 2: Convert to fraction form
    2,988.28/4,124.01 = 1,809.46/x
  3. Step 3: Cross multiply
    2,988.28x = 4,124.01 × 1,809.46
  4. Step 4: Simplify right side
    2,988.28x = 7,462,231.13
  5. Step 5: Solve for x
    x = 7,462,231.13/2,988.28
  6. Step 6: Final answer
    x = 2,497.17

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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.