Home / 2,852.55-4,280.20-1,390.91

Finding the Fourth Proportional to 2,852.55, 4,280.20 and 1,390.91

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Solution

The fourth proportional to 2,852.55, 4,280.20 and 1,390.91 is: 2,087.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,852.55 : 4,280.20 = 1,390.91 : x
  2. Step 2: Convert to fraction form
    2,852.55/4,280.20 = 1,390.91/x
  3. Step 3: Cross multiply
    2,852.55x = 4,280.20 × 1,390.91
  4. Step 4: Simplify right side
    2,852.55x = 5,953,372.98
  5. Step 5: Solve for x
    x = 5,953,372.98/2,852.55
  6. Step 6: Final answer
    x = 2,087.04

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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.