Home / 1,276.12-1,915.28-583.84

Finding the Fourth Proportional to 1,276.12, 1,915.28 and 583.84

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Solution

The fourth proportional to 1,276.12, 1,915.28 and 583.84 is: 876.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.12 : 1,915.28 = 583.84 : x
  2. Step 2: Convert to fraction form
    1,276.12/1,915.28 = 583.84/x
  3. Step 3: Cross multiply
    1,276.12x = 1,915.28 × 583.84
  4. Step 4: Simplify right side
    1,276.12x = 1,118,217.08
  5. Step 5: Solve for x
    x = 1,118,217.08/1,276.12
  6. Step 6: Final answer
    x = 876.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.