Home / 2,179.95-3,270.18-947.49

Finding the Fourth Proportional to 2,179.95, 3,270.18 and 947.49

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Solution

The fourth proportional to 2,179.95, 3,270.18 and 947.49 is: 1,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.95 : 3,270.18 = 947.49 : x
  2. Step 2: Convert to fraction form
    2,179.95/3,270.18 = 947.49/x
  3. Step 3: Cross multiply
    2,179.95x = 3,270.18 × 947.49
  4. Step 4: Simplify right side
    2,179.95x = 3,098,462.85
  5. Step 5: Solve for x
    x = 3,098,462.85/2,179.95
  6. Step 6: Final answer
    x = 1,421.35

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Double scale
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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.