Home / 2,988.65-4,124.67-1,729.69

Finding the Fourth Proportional to 2,988.65, 4,124.67 and 1,729.69

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Solution

The fourth proportional to 2,988.65, 4,124.67 and 1,729.69 is: 2,387.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.65 : 4,124.67 = 1,729.69 : x
  2. Step 2: Convert to fraction form
    2,988.65/4,124.67 = 1,729.69/x
  3. Step 3: Cross multiply
    2,988.65x = 4,124.67 × 1,729.69
  4. Step 4: Simplify right side
    2,988.65x = 7,134,371.18
  5. Step 5: Solve for x
    x = 7,134,371.18/2,988.65
  6. Step 6: Final answer
    x = 2,387.16

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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.