Home / 2,988.81-4,479.57-1,686.33

Finding the Fourth Proportional to 2,988.81, 4,479.57 and 1,686.33

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Solution

The fourth proportional to 2,988.81, 4,479.57 and 1,686.33 is: 2,527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.81 : 4,479.57 = 1,686.33 : x
  2. Step 2: Convert to fraction form
    2,988.81/4,479.57 = 1,686.33/x
  3. Step 3: Cross multiply
    2,988.81x = 4,479.57 × 1,686.33
  4. Step 4: Simplify right side
    2,988.81x = 7,554,033.28
  5. Step 5: Solve for x
    x = 7,554,033.28/2,988.81
  6. Step 6: Final answer
    x = 2,527.44

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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.