Home / 1,569.94-2,166.01-1,121.43

Finding the Fourth Proportional to 1,569.94, 2,166.01 and 1,121.43

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Solution

The fourth proportional to 1,569.94, 2,166.01 and 1,121.43 is: 1,547.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.94 : 2,166.01 = 1,121.43 : x
  2. Step 2: Convert to fraction form
    1,569.94/2,166.01 = 1,121.43/x
  3. Step 3: Cross multiply
    1,569.94x = 2,166.01 × 1,121.43
  4. Step 4: Simplify right side
    1,569.94x = 2,429,028.59
  5. Step 5: Solve for x
    x = 2,429,028.59/1,569.94
  6. Step 6: Final answer
    x = 1,547.21

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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.