Home / 2,884.81-3,981.06-1,690.51

Finding the Fourth Proportional to 2,884.81, 3,981.06 and 1,690.51

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Solution

The fourth proportional to 2,884.81, 3,981.06 and 1,690.51 is: 2,332.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,884.81 : 3,981.06 = 1,690.51 : x
  2. Step 2: Convert to fraction form
    2,884.81/3,981.06 = 1,690.51/x
  3. Step 3: Cross multiply
    2,884.81x = 3,981.06 × 1,690.51
  4. Step 4: Simplify right side
    2,884.81x = 6,730,001.84
  5. Step 5: Solve for x
    x = 6,730,001.84/2,884.81
  6. Step 6: Final answer
    x = 2,332.91

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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.