Home / 1,569.33-2,153.70-1,421.64

Finding the Fourth Proportional to 1,569.33, 2,153.70 and 1,421.64

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Solution

The fourth proportional to 1,569.33, 2,153.70 and 1,421.64 is: 1,951.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.33 : 2,153.70 = 1,421.64 : x
  2. Step 2: Convert to fraction form
    1,569.33/2,153.70 = 1,421.64/x
  3. Step 3: Cross multiply
    1,569.33x = 2,153.70 × 1,421.64
  4. Step 4: Simplify right side
    1,569.33x = 3,061,786.07
  5. Step 5: Solve for x
    x = 3,061,786.07/1,569.33
  6. Step 6: Final answer
    x = 1,951.01

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.