Home / 2,931.80-4,044.33-1,986.32

Finding the Fourth Proportional to 2,931.80, 4,044.33 and 1,986.32

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Solution

The fourth proportional to 2,931.80, 4,044.33 and 1,986.32 is: 2,740.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.80 : 4,044.33 = 1,986.32 : x
  2. Step 2: Convert to fraction form
    2,931.80/4,044.33 = 1,986.32/x
  3. Step 3: Cross multiply
    2,931.80x = 4,044.33 × 1,986.32
  4. Step 4: Simplify right side
    2,931.80x = 8,033,343.68
  5. Step 5: Solve for x
    x = 8,033,343.68/2,931.80
  6. Step 6: Final answer
    x = 2,740.08

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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.