Home / 1,915.04-2,641.80-1,284.76

Finding the Fourth Proportional to 1,915.04, 2,641.80 and 1,284.76

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Solution

The fourth proportional to 1,915.04, 2,641.80 and 1,284.76 is: 1,772.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.04 : 2,641.80 = 1,284.76 : x
  2. Step 2: Convert to fraction form
    1,915.04/2,641.80 = 1,284.76/x
  3. Step 3: Cross multiply
    1,915.04x = 2,641.80 × 1,284.76
  4. Step 4: Simplify right side
    1,915.04x = 3,394,059.34
  5. Step 5: Solve for x
    x = 3,394,059.34/1,915.04
  6. Step 6: Final answer
    x = 1,772.32

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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.