Home / 1,385.11-2,076.98-460.34

Finding the Fourth Proportional to 1,385.11, 2,076.98 and 460.34

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Solution

The fourth proportional to 1,385.11, 2,076.98 and 460.34 is: 690.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.11 : 2,076.98 = 460.34 : x
  2. Step 2: Convert to fraction form
    1,385.11/2,076.98 = 460.34/x
  3. Step 3: Cross multiply
    1,385.11x = 2,076.98 × 460.34
  4. Step 4: Simplify right side
    1,385.11x = 956,123.76
  5. Step 5: Solve for x
    x = 956,123.76/1,385.11
  6. Step 6: Final answer
    x = 690.29

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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.