Home / 2,154.95-3,230.60-1,276.50

Finding the Fourth Proportional to 2,154.95, 3,230.60 and 1,276.50

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Solution

The fourth proportional to 2,154.95, 3,230.60 and 1,276.50 is: 1,913.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.95 : 3,230.60 = 1,276.50 : x
  2. Step 2: Convert to fraction form
    2,154.95/3,230.60 = 1,276.50/x
  3. Step 3: Cross multiply
    2,154.95x = 3,230.60 × 1,276.50
  4. Step 4: Simplify right side
    2,154.95x = 4,123,854.52
  5. Step 5: Solve for x
    x = 4,123,854.52/2,154.95
  6. Step 6: Final answer
    x = 1,913.67

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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.