Home / 1,671.28-2,307.44-1,228.42

Finding the Fourth Proportional to 1,671.28, 2,307.44 and 1,228.42

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Solution

The fourth proportional to 1,671.28, 2,307.44 and 1,228.42 is: 1,696.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.28 : 2,307.44 = 1,228.42 : x
  2. Step 2: Convert to fraction form
    1,671.28/2,307.44 = 1,228.42/x
  3. Step 3: Cross multiply
    1,671.28x = 2,307.44 × 1,228.42
  4. Step 4: Simplify right side
    1,671.28x = 2,834,491.51
  5. Step 5: Solve for x
    x = 2,834,491.51/1,671.28
  6. Step 6: Final answer
    x = 1,696.00

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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.