Home / 2,280.19-3,418.91-891.87

Finding the Fourth Proportional to 2,280.19, 3,418.91 and 891.87

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Solution

The fourth proportional to 2,280.19, 3,418.91 and 891.87 is: 1,337.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.19 : 3,418.91 = 891.87 : x
  2. Step 2: Convert to fraction form
    2,280.19/3,418.91 = 891.87/x
  3. Step 3: Cross multiply
    2,280.19x = 3,418.91 × 891.87
  4. Step 4: Simplify right side
    2,280.19x = 3,049,225.49
  5. Step 5: Solve for x
    x = 3,049,225.49/2,280.19
  6. Step 6: Final answer
    x = 1,337.27

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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.