Home / 1,968.30-2,715.73-1,569.78

Finding the Fourth Proportional to 1,968.30, 2,715.73 and 1,569.78

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Solution

The fourth proportional to 1,968.30, 2,715.73 and 1,569.78 is: 2,165.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.30 : 2,715.73 = 1,569.78 : x
  2. Step 2: Convert to fraction form
    1,968.30/2,715.73 = 1,569.78/x
  3. Step 3: Cross multiply
    1,968.30x = 2,715.73 × 1,569.78
  4. Step 4: Simplify right side
    1,968.30x = 4,263,094.71
  5. Step 5: Solve for x
    x = 4,263,094.71/1,968.30
  6. Step 6: Final answer
    x = 2,165.88

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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.