Home / 3,587.84-5,377.28-1,276.80

Finding the Fourth Proportional to 3,587.84, 5,377.28 and 1,276.80

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Solution

The fourth proportional to 3,587.84, 5,377.28 and 1,276.80 is: 1,913.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587.84 : 5,377.28 = 1,276.80 : x
  2. Step 2: Convert to fraction form
    3,587.84/5,377.28 = 1,276.80/x
  3. Step 3: Cross multiply
    3,587.84x = 5,377.28 × 1,276.80
  4. Step 4: Simplify right side
    3,587.84x = 6,865,711.10
  5. Step 5: Solve for x
    x = 6,865,711.10/3,587.84
  6. Step 6: Final answer
    x = 1,913.61

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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.