Home / 1,475.70-2,211.83-947.93

Finding the Fourth Proportional to 1,475.70, 2,211.83 and 947.93

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Solution

The fourth proportional to 1,475.70, 2,211.83 and 947.93 is: 1,420.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.70 : 2,211.83 = 947.93 : x
  2. Step 2: Convert to fraction form
    1,475.70/2,211.83 = 947.93/x
  3. Step 3: Cross multiply
    1,475.70x = 2,211.83 × 947.93
  4. Step 4: Simplify right side
    1,475.70x = 2,096,644.21
  5. Step 5: Solve for x
    x = 2,096,644.21/1,475.70
  6. Step 6: Final answer
    x = 1,420.78

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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.