Home / 5,390.84-8,077.27-1,878.91

Finding the Fourth Proportional to 5,390.84, 8,077.27 and 1,878.91

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Solution

The fourth proportional to 5,390.84, 8,077.27 and 1,878.91 is: 2,815.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.84 : 8,077.27 = 1,878.91 : x
  2. Step 2: Convert to fraction form
    5,390.84/8,077.27 = 1,878.91/x
  3. Step 3: Cross multiply
    5,390.84x = 8,077.27 × 1,878.91
  4. Step 4: Simplify right side
    5,390.84x = 15,176,418.29
  5. Step 5: Solve for x
    x = 15,176,418.29/5,390.84
  6. Step 6: Final answer
    x = 2,815.23

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1.5x scale

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.