Home / 2,801.40-4,200.76-1,631.74

Finding the Fourth Proportional to 2,801.40, 4,200.76 and 1,631.74

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Solution

The fourth proportional to 2,801.40, 4,200.76 and 1,631.74 is: 2,446.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.40 : 4,200.76 = 1,631.74 : x
  2. Step 2: Convert to fraction form
    2,801.40/4,200.76 = 1,631.74/x
  3. Step 3: Cross multiply
    2,801.40x = 4,200.76 × 1,631.74
  4. Step 4: Simplify right side
    2,801.40x = 6,854,549.75
  5. Step 5: Solve for x
    x = 6,854,549.75/2,801.40
  6. Step 6: Final answer
    x = 2,446.83

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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.